Members Can Post Anonymously On This Site
Astronomers Find Jupiter-like Cloud Bands on Closest Brown Dwarf
-
Similar Topics
-
By NASA
NASA’s Artemis campaign is a series of lunar missions to further explore the lunar landscape to prepare for future missions to Mars. The Artemis missions will send humans to land on the moon and explore the lunar south pole. This will be NASA’s first human lunar landing since the Apollo missions over 50 years ago. The Artemis missions will be landing at the lunar south pole; this area is of interest because the permanently shadowed regions that exist there may be traps for water ice which could be accessed to support future missions to Mars. One area of interest is Shackleton Crater, measuring 13 miles (21 km) in diameter and 2.6 miles (4.2 km) deep. The crater has steep sides and continuous shadows cause the floor of the crater to be below 90 K and may have water ice trapped beneath the surface. To support these missions, NASA is seeking two solutions: one low-tech and one high-tech. While both solutions are related to navigation, they are independent challenges and solutions. For Challenge 1, NASA is seeking an orienteering aid that will help the astronauts navigate on traverses away from the lunar lander and return back. While there were similar devices available to the Apollo astronauts, NASA is looking for new and unique solutions. Among other considerations, devices must be accurate, easy to use, able to be used on the moon’s surface by an astronaut wearing pressurized gloves. If your solution is one of the best, you could be eligible for a share of the $15,000 prize purse. For Challenge 2, NASA is looking for assistance in getting to and mapping the bottom of Shackleton Crater. The design must work in the extreme conditions of the lunar south pole and Shackleton Crater, map the crater, characterize and quantify what is in the crater, and send the data back to be used for future missions. If you can solve this challenge by describing your design concept in detail, you could be eligible for a share of the $30,000 prize purse.
Award: $50,000 in total prizes
Open Date: September 4, 2024
Close Date: November 25, 2024
For more information, visit: https://www.freelancer.com/contest/Find-Me-on-the-Moon-NASA-Lunar-Navigation-Challenge-2442541/details
View the full article
-
By NASA
Hubble Space Telescope Home NASA’s Hubble, Chandra… Missions Hubble Home Overview About Hubble The History of Hubble Hubble Timeline Why Have a Telescope in Space? Hubble by the Numbers At the Museum FAQs Impact & Benefits Hubble’s Impact & Benefits Science Impacts Cultural Impact Technology Benefits Impact on Human Spaceflight Astro Community Impacts Science Hubble Science Science Themes Science Highlights Science Behind Discoveries Hubble’s Partners in Science Universe Uncovered Explore the Night Sky Observatory Hubble Observatory Hubble Design Mission Operations Missions to Hubble Hubble vs Webb Team Hubble Team Career Aspirations Hubble Astronauts News Hubble News Hubble News Archive Social Media Media Resources Multimedia Multimedia Images Videos Sonifications Podcasts E-books Lithographs Fact Sheets Glossary Posters Hubble on the NASA App More Online Activities 5 min read
NASA’s Hubble, Chandra Find Supermassive Black Hole Duo
This is an artist’s depiction of a pair of active black holes at the heart of two merging galaxies. They are both surrounded by an accretion disk of hot gas. Some of the material is ejected along the spin axis of each black hole. Confined by powerful magnetic fields, the jets blaze across space at nearly the speed of light as devastating beams of energy. NASA, ESA, Joseph Olmsted (STScI)
Download this artist’s depiction
Like two Sumo wrestlers squaring off, the closest confirmed pair of supermassive black holes have been observed in tight proximity. These are located approximately 300 light-years apart and were detected using NASA’s Hubble Space Telescope and the Chandra X-ray Observatory. These black holes, buried deep within a pair of colliding galaxies, are fueled by infalling gas and dust, causing them to shine brightly as active galactic nuclei (AGN).
This AGN pair is the closest one detected in the local universe using multiwavelength (visible and X-ray light) observations. While several dozen “dual” black holes have been found before, their separations are typically much greater than what was discovered in the gas-rich galaxy MCG-03-34-64. Astronomers using radio telescopes have observed one pair of binary black holes in even closer proximity than in MCG-03-34-64, but without confirmation in other wavelengths.
AGN binaries like this were likely more common in the early universe when galaxy mergers were more frequent. This discovery provides a unique close-up look at a nearby example, located about 800 million light-years away.
A Hubble Space Telescope visible-light image of the galaxy MCG-03-34-064. Hubble’s sharp view reveals three distinct bright spots embedded in a white ellipse at the galaxy’s center (expanded in an inset image at upper right). Two of these bright spots are the source of strong X-ray emission, a telltale sign that they are supermassive black holes. The black holes shine brightly because they are converting infalling matter into energy, and blaze across space as active galactic nuclei. Their separation is about 300 light-years. The third spot is a blob of bright gas. The blue streak pointing to the 5 o’clock position may be a jet fired from one of the black holes. The black hole pair is a result of a merger between two galaxies that will eventually collide. NASA, ESA, Anna Trindade Falcão (CfA); Image Processing: Joseph DePasquale (STScI)
Download this image
The discovery was serendipitous. Hubble’s high-resolution imaging revealed three optical diffraction spikes nested inside the host galaxy, indicating a large concentration of glowing oxygen gas within a very small area. “We were not expecting to see something like this,” said Anna Trindade Falcão of the Center for Astrophysics | Harvard & Smithsonian in Cambridge, Massachusetts, lead author of the paper published today in The Astrophysical Journal. “This view is not a common occurrence in the nearby universe, and told us there’s something else going on inside the galaxy.”
Diffraction spikes are imaging artifacts caused when light from a very small region in space bends around the mirror inside telescopes.
Falcão’s team then examined the same galaxy in X-rays light using the Chandra observatory to drill into what’s going on. “When we looked at MCG-03-34-64 in the X-ray band, we saw two separated, powerful sources of high-energy emission coincident with the bright optical points of light seen with Hubble. We put these pieces together and concluded that we were likely looking at two closely spaced supermassive black holes,” said Falcão.
In a surprise finding, astronomers, using NASA’s Hubble Space Telescope have discovered that the jet from a supermassive black hole at the core of M87, a huge galaxy 54 million light years away, seems to cause stars to erupt along its trajectory. The stars, called novae, are not caught inside the jet, but in a dangerous area near it.
NASA’s Goddard Space Flight Center; Lead Producer: Paul Morris To support their interpretation, the researchers used archival radio data from the Karl G. Jansky Very Large Array near Socorro, New Mexico. The energetic black hole duo also emits powerful radio waves. “When you see bright light in optical, X-rays, and radio wavelengths, a lot of things can be ruled out, leaving the conclusion these can only be explained as close black holes. When you put all the pieces together it gives you the picture of the AGN duo,” said Falcão.
The third source of bright light seen by Hubble is of unknown origin, and more data is needed to understand it. That might be gas that is shocked by energy from a jet of ultra high-speed plasma fired from one of the black holes, like a stream of water from a garden hose blasting into a pile of sand.
“We wouldn’t be able to see all of these intricacies without Hubble’s amazing resolution,” said Falcão.
The two supermassive black holes were once at the core of their respective host galaxies. A merger between the galaxies brought the black holes into close proximity. They will continue to spiral closer together until they eventually merge — in perhaps 100 million years — rattling the fabric of space and time as gravitational waves.
The National Science Foundation’s Laser Interferometer Gravitational-Wave Observatory (LIGO) has detected gravitational waves from dozens of mergers between stellar-mass black holes. But the longer wavelengths resulting from a supermassive black hole merger are beyond LIGO’s capabilities. The next-generation gravitational wave detector, called the LISA (Laser Interferometer Space Antenna) mission, will consist of three detectors in space, separated by millions of miles, to capture these longer wavelength gravitational waves from deep space. ESA (European Space Agency) is leading this mission, partnering with NASA and other participating institutions, with a planned launch in the mid-2030s.
NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science from Cambridge, Massachusetts and flight operations from Burlington, Massachusetts. Northrop Grumman Space Technologies in Redondo Beach, California was the prime contractor for the spacecraft.
The Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, Colorado, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, Maryland, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contacts:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Ray Villard
Space Telescope Science Institute, Baltimore, MD
Science Contact:
Anna Trindade Falcão
Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA
Share
Details
Last Updated Sep 09, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
Active Galaxies Astrophysics Astrophysics Division Chandra X-Ray Observatory Galaxies Goddard Space Flight Center Hubble Space Telescope Marshall Space Flight Center Missions Spiral Galaxies The Universe Keep Exploring Discover More Topics From Hubble
Hubble Space Telescope
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Galaxy Details and Mergers
Monster Black Holes Are Everywhere
Hubble’s Galaxies
View the full article
-
By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Meet four employees from NASA’s Glenn Research Center who have a personal connection to aviation, at work and beyond.Credit: (Left to right): Waldo Acosta, Jared Berg, Lori Manthey, Lindsay Kaldon The first “A” in NASA stands for aeronautics. Glenn Research Center in Cleveland is just one of several NASA centers conducting revolutionary research to make flight cleaner, safer, and quieter.
But an interest in flying goes beyond the professional for many at NASA. Meet a handful of NASA Glenn employees who have a personal connection to aviation, at work and beyond.
Jared Berg
“I think my flying and engineering work positively influence each other. Flying integrates a lot of technical disciplines and serves as a real-word application of things I know theoretically about aerodynamics or heat transfer.”
jared berg
Thermal Subsystem Manager for Gateway’s Power and Propulsion Element
Left photo: Jared Berg flying above the clouds in the the NASAIRS Flying Club’s Cessna 172. Right photo: A view out the plane window.Credit: Jared Berg Planting the Seed: Berg grew up reading aviation books with his family and building model planes. Attending the EAA AirVenture airshow in Oshkosh, Wisconsin, throughout childhood inspired him to pursue flight training once he had a full-time NASA job.
Joining the Club: Berg is currently a member of the NASAIRS Flying Club at NASA Glenn, which he says helps make flying more accessible and lets him constantly learn from other pilots.
Flying High: Berg has now been flying recreationally for over a decade and considers it a part of his everyday life. “Flying allows an escape from the mundane and brings a sense of adventure to traveling,” Berg said. “You also get to experience nature, specifically weather but also the land you’re flying over, in a way that’s relatively raw and somehow personal.”
Lindsay Kaldon
"I love the feeling after takeoff and when you’ve reached cruising altitude. It’s as if all the stresses of life wash away when you’re up there in the sky. Being up in the clouds with all the beauty of the Earth below, it’s as if you’re in heaven.”
Lindsay Kaldon
Fission Surface Power Project Manager
Left photo: Lindsay Kaldon after her first solo flight. Right photo: Kaldon celebrates passing her private pilot exam.Credit: Lindsay Kaldon Air Force and Astronauts: Kaldon’s father was an Air Force F-16 crew chief and a member of the Thunderbirds demonstration team, so Kaldon was no stranger to jets growing up. “Every day was an airshow living on the base that they trained out of,” Kaldon said. After earning a bachelor’s degree in electrical engineering, Kaldon joined the Air Force herself with hopes of one day becoming an astronaut.
Going Solo: Kaldon later earned her private pilot’s license and says she’ll always remember her first solo cross-country flight. She chose Kitty Hawk, the site of the Wright brothers’ first flight, as her destination.
Keeping the Energy: A monument that stands along the runway at Kitty Hawk is inscribed with words Kaldon remembers whenever solving difficult challenges through her work at NASA. “It says, ‘Achieved by Dauntless Resolution and Unconquerable Faith.’ The Wright brothers were faced with a lot of doubters who didn’t think flight was possible. Yet they proved them wrong and never gave up,” Kaldon said. “I love that. When things get tough, I just close my eyes and think about that phrase.”
Lori Manthey
“I encourage anyone who has an interest in flying to take a discovery flight at your local airport. If you get bitten by the flying bug, it just may become a life-long obsession. Ask me how I know!”
Lori Manthey
Chief of Administrative Services and Exchange Operations Manager
Left photo: Lori Manthey with a Grumman Cheetah plane. Right photo: Lori Manthey at the Grumman Cheetah controls.Credit: Lori Manthey Head in the Clouds: After a discovery flight in a small Cessna 150 plane, Manthey was hooked on flying. On weekends and evenings after beginning a full-time NASA job, she hopped in a Piper Tomahawk single-engine trainer at Lorain County Regional Airport to earn her private pilot certificate. “I love the feeling of floating in the air and seeing the world below,” she said.
Women in Aero: Manthey is passionate about advancing and supporting female pilots and currently serves as membership chair of the Lake Erie chapter of the Ninety-Nines, an organization started by Amelia Earhart in 1929. She is also a member of the Cleveland chapter of Women in Aviation.
Looking to the Future: Every year, Manthey participates in Girls in Aviation Day at Cleveland’s Burke Lakefront Airport to introduce girls to the world of aviation. “I think it is so important to help encourage young women and girls to become part of the next generation of female pilots,” she said.
Back in the Cockpit: Manthey is currently working to earn her instrument rating, which will let her fly “blind” in cloudy and foggy weather conditions.
Waldo J. Acosta
“Flying gives me a thrill. The perspective you’re able to see of the world from up in the sky is a special feeling. Aircraft have the ability to take us all over the world so we can experience different cultures and meet different people, and that has shaped me into who I am today.”
Waldo J. Acosta
Icing Research Tunnel Lead Facility Engineer
Left photo: Waldo J. Acosta, right, stands beside his father before taking him for a ride in a DA20 aircraft. Top right photo: A young Acosta and his father at the EAA AirVenture airshow in Oshkosh, Wisconsin. Lower right photo: Acosta (center) works with colleagues Tadas Bartkus (left) and Emily Timko in the control room of NASA Glenn Research Center’s Icing Research Tunnel. Credit: Waldo J. Acosta, NASA/Jef Janis Family Ties: Throughout Acosta’s childhood, Acosta’s father, a former researcher at NASA Glenn, brought his family along on work trips to the EAA AirVenture airshow in Oshkosh, Wisconsin. “I fell in love with everything related to flying during those trips, and they set the tone early on my path to working in aviation,” Acosta said.
Next Steps: Acosta started taking flying lessons while studying aerospace engineering at The Ohio State University, eventually receiving his private pilot’s license.
Safety First: Overseeing testing and maintenance operations at NASA Glenn’s Icing Research Tunnel, Acosta is now directly involved in aviation safety research. The facility, the longest-running icing wind tunnel in the world, helps NASA and industry study how ice affects aircraft and test ice protection systems and tools.
Flying Full Circle: Acosta still attends airshows every chance he can get and has taken both his father and wife soaring into the clouds.
Keep Exploring Discover More Topics From NASA
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
By NASA
5 Min Read ‘Current’ Events: NASA and USGS Find a New Way to Measure River Flows
The River Observing System (RiOS) tracking the motion of water surface features from above a section of the Sacramento River in Northern California in 2023. Credits: NASA/USGS/Joe Adams and Chris Gazoorian A team of scientists and engineers at NASA and the U.S. Geological Survey (USGS) collaborated to see if a small piloted drone, equipped with a specialized payload, could help create detailed maps of how fast water is flowing. Rivers supply fresh water to our communities and farms, provide homes for a variety of creatures, transport people and goods, and generate electricity. But river flows can also carry pollutants downstream or suddenly surge, posing dangers to people, wildlife, and property. As NASA continues its ongoing commitment to better understand our home planet, researchers are working to answer the question of how do we stay in-the-know about where and how quickly river flows change?
NASA and USGS scientists have teamed up to create an instrument package – about the size of a gallon of milk – called the River Observing System (RiOS). It features thermal and visible cameras for tracking the motion of water surface features, a laser to measure altitude, navigation sensors, an onboard computer, and a wireless communications system. In 2023, researchers took RiOS into the field for testing along a section of the Sacramento River in Northern California, and plan to return for a third and final field test in the fall of 2024.
The River Observing System (RiOS) tracking the motion of water surface features from above a section of the Sacramento River in Northern California in 2023. “Deploying RiOS above a river to evaluate the system’s performance in a real-world setting is incredibly important,” said Carl Legleiter, USGS principal investigator of the joint NASA-USGS StreamFlow project. “During these test flights we demonstrated that the onboard payload can be used to make calculations – do the analysis – in nearly real-time, while the drone is flying above the river. This was one of our top-tier goals: to enable minimal latency between the time we acquire images and when we have detailed information on current speeds and flow patterns within the river.”
To realize this vision for onboard computing, the team uses open-source software, combined with their own code, to produce maps of water surface velocities, or flow field, from a series of images taken over time.
“You might think that we need to be able to see discrete, physical objects – like sticks or silt or other debris as they move downstream – to estimate the flow velocity, but that’s not always the case, nor is it always possible,” said Legleiter. “Using a highly-sensitive infrared camera, we instead detect the movement of subtle differences in the temperature of water carried downstream.”
Those same tiny temperature differences also appear wherever there are undulations – like at the boundary between the air and the water or ice below. Knowing this, NASA members of the StreamFlow team used this phenomenon to their advantage when developing methods for possible future landed planetary missions to navigate at distant and hard-to-see environments, including Europa, the icy moon orbiting Jupiter.
Our technology can precisely track the static surface of icy terrain while flying over it, or a moving surface, like water, while hovering above it to keep the spacecraft safe while gathering valuable data
uland wong
Co-investigator and NASA lead of the StreamFlow Project
“Icy surfaces present challenging visual conditions such as lack of contrast,” said Uland Wong, co-investigator and NASA lead of the StreamFlow project at NASA’s Ames Research Center in California’s Silicon Valley. “Our technology can precisely track the static surface of icy terrain while flying over it, or a moving surface, like water, while hovering above it to keep the spacecraft safe while gathering valuable data.”
To prepare for the Sacramento River field tests, the NASA team built a robotics simulator to run thousands of virtual drone flights over the Sacramento River test site using flow fields modeled by USGS. These simulations are helping the team create intelligent software capable of selecting the best routes for the drone to fly and ensuring efficient use of limited battery power.
The next step in the partnership is for NASA to develop techniques for making the system more autonomous. The researchers want to use calculations of river flows – performed onboard in real time – to guide where the drone should fly next.
“Does the drone drop down to get better resolution data about a particular location or stay high and capture a wide-angle view,” posed Wong. “If it identifies areas that are flowing particularly fast or slow, could the drone more quickly detect areas of flooding?”
The USGS currently operates an extensive network of thousands of automated stream gauges and fixed cameras installed on bridges and riverbanks to monitor river flows in real-time across the country.
“Drones could enable us to make measurements in so many more areas, potentially allowing our network to be larger, more robust, and safer for our technicians to monitor and maintain,” said Paul Kinzel, StreamFlow co-investigator at USGS. “Drones could help keep our people and equipment out of harm’s way in addition to telling us how the environment is changing over time in as many locations as possible.”
A drone with the StreamFlow thermal mapping payload flying above the Sacramento River in Northern California.NASA/Massimo Vespignani For more information about how NASA improves life on Earth through climate and technological innovations, visit:
http://www.nasa.gov/earth
The StreamFlow project is a collaboration between researchers with the USGS’s Hydrologic Remote Sensing Branch, Unmanned Aircraft Systems engineers with the USGS National Innovation Center, and scientists in the Intelligent Robotics Group at NASA Ames. The Streamflow payload concept was demonstrated through research initially seeded by a grant from the USGS National Innovation Center and is now supported by NASA’s Advanced Information Systems Technology program, which is managed by the agency’s Earth Science Technology Office. The field tests were conducted in collaboration with the National Oceanographic and Atmospheric Administration (NOAA) Southwest Fisheries Science Center, which helped collect direct field measurements of the river’s flow velocity and granted access to the field site, which is owned by the Nature Conservancy.
Share
Details
Last Updated Aug 05, 2024 Related Terms
Earth Science Division Ames Research Center Applied Sciences Program Drones & You General USGS (United States Geological Survey) Keep Exploring Discover More Topics From NASA
Ames Research Center
Earth Science – Technology
Rivers on Earth, Titan, and Mars
One of the more distinctive things about Earth among the planets is that we have plate tectonics. In other words,…
Climate Change
NASA is a global leader in studying Earth’s changing climate.
View the full article
-
By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Perseverance rover discovered “leopard spots” on a reddish rock nicknamed “Cheyava Falls” in Mars’ Jezero Crater in July 2024. Scientists think the spots may indicate that, billions of years ago, the chemical reactions in this rock could have supported microbial life; other explanations are being considered.NASA/JPL-Caltech/MSSS An annotated version of the image of “Cheyava Falls” indicates the markings akin to leopard spots, which have particularly captivated scientists, and the olivine in the rock. The image was captured by the WATSON instrument on NASA’s Perseverance Mars rover on July 18.NASA/JPL-Caltech/MSSS The six-wheeled geologist found a fascinating rock that has some indications it may have hosted microbial life billions of years ago, but further research is needed.
A vein-filled rock is catching the eye of the science team of NASA’s Perseverance rover. Nicknamed “Cheyava Falls” by the team, the arrowhead-shaped rock contains fascinating traits that may bear on the question of whether Mars was home to microscopic life in the distant past.
Analysis by instruments aboard the rover indicates the rock possesses qualities that fit the definition of a possible indicator of ancient life. The rock exhibits chemical signatures and structures that could possibly have been formed by life billions of years ago when the area being explored by the rover contained running water. Other explanations for the observed features are being considered by the science team, and future research steps will be required to determine whether ancient life is a valid explanation.
The rock — the rover’s 22nd rock core sample — was collected on July 21, as the rover explored the northern edge of Neretva Vallis, an ancient river valley measuring a quarter-mile (400 meters) wide that was carved by water rushing into Jezero Crater long ago.
“Cheyava Falls” (left) shows the dark hole where NASA’s Perseverance took a core sample; the white patch is where the rover abraded the rock to investigate its composition. A rock nicknamed “Steamboat Mountain” (right) also shows an abrasion patch. This image was taken by Mastcam-Z on July 23.NASA/JPL-Caltech/ASU/MSSS NASA’s Perseverance used its Mastcam-Z instrument to view the “Cheyava Falls” rock sample within the rover’s drill bit. Scientists believe markings on the rock contain fascinating traits that may bear on the question of whether Mars was home to microscopic life in the distant past.NASA/JPL-Caltech/ASU/MSSS “We have designed the route for Perseverance to ensure that it goes to areas with the potential for interesting scientific samples,” said Nicola Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “This trip through the Neretva Vallis riverbed paid off as we found something we’ve never seen before, which will give our scientists so much to study.”
Multiple scans of Cheyava Falls by the rover’s SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals) instrument indicate it contains organic compounds. While such carbon-based molecules are considered the building blocks of life, they also can be formed by non-biological processes.
“Cheyava Falls is the most puzzling, complex, and potentially important rock yet investigated by Perseverance,” said Ken Farley,Perseverance project scientist of Caltech in Pasadena. “On the one hand, we have our first compelling detection of organic material, distinctive colorful spots indicative of chemical reactions that microbial life could use as an energy source, and clear evidence that water — necessary for life — once passed through the rock. On the other hand, we have been unable to determine exactly how the rock formed and to what extent nearby rocks may have heated Cheyava Falls and contributed to these features.”
NASA’s Perseverance rover used its Mastcam-Z instrument to capture this 360-degree panorama of a region on Mars called “Bright Angel,” where an ancient river flowed billions of years ago. “Cheyava Falls” was discovered in the area slightly right of center, about 361 feet (110 meters) from the rover.NASA/JPL-Caltech/ASU/MSSS Other details about the rock, which measures 3.2 feet by 2 feet (1 meter by 0.6 meters) and was named after a Grand Canyon waterfall, have intrigued the team, as well.
How Rocks Get Their Spots
In its search for signs of ancient microbial life, the Perseverance mission has focused on rocks that may have been created or modified long ago by the presence of water. That’s why the team homed in on Cheyava Falls.
“This is the kind of key observation that SHERLOC was built for — to seek organic matter as it is an essential component of a search for past life,” said SHERLOC’s principal investigator Kevin Hand of NASA’s Jet Propulsion Laboratory in Southern California, which manages the mission.
Running the length of the rock are large white calcium sulfate veins. Between those veins are bands of material whose reddish color suggests the presence of hematite, one of the minerals that gives Mars its distinctive rusty hue.
When Perseverance took a closer look at these red regions, it found dozens of irregularly shaped, millimeter-size off-white splotches, each ringed with black material, akin to leopard spots. Perseverance’s PIXL (Planetary Instrument for X-ray Lithochemistry) instrument has determined these black halos contain both iron and phosphate.
As shown in this graphic, astrobiologists catalog a seven-step scale, called the CoLD (Confidence of Life Detection) scale, to research whether a sample could indicate life. This “Cheyava Falls” sample is an example of Step One: “Detect possible signal.” Much additional research must be conducted to learn more.NASA/Aaron Gronstal “These spots are a big surprise,” said David Flannery, an astrobiologist and member of the Perseverance science team from the Queensland University of Technology in Australia. “On Earth, these types of features in rocks are often associated with the fossilized record of microbes living in the subsurface.”
Spotting of this type on sedimentary terrestrial rocks can occur when chemical reactions involving hematite turn the rock from red to white. Those reactions can also release iron and phosphate, possibly causing the black halos to form. Reactions of this type can be an energy source for microbes, explaining the association between such features and microbes in a terrestrial setting.
In one scenario the Perseverance science team is considering, Cheyava Falls was initially deposited as mud with organic compounds mixed in that eventually cemented into rock. Later, a second episode of fluid flow penetrated fissures in the rock, enabling mineral deposits that created the large white calcium sulfate veins seen today and resulting in the spots.
Another Puzzle Piece
While both the organic matter and the leopard spots are of great interest, they aren’t the only aspects of the Cheyava Falls rock confounding the science team. They were surprised to find that these veins are filled with millimeter-size crystals of olivine, a mineral that forms from magma. The olivine might be related to rocks that were formed farther up the rim of the river valley and that may have been produced by crystallization of magma.
If so, the team has another question to answer: Could the olivine and sulfate have been introduced to the rock at uninhabitably high temperatures, creating an abiotic chemical reaction that resulted in the leopard spots?
“We have zapped that rock with lasers and X-rays and imaged it literally day and night from just about every angle imaginable,” said Farley. “Scientifically, Perseverance has nothing more to give. To fully understand what really happened in that Martian river valley at Jezero Crater billions of years ago, we’d want to bring the Cheyava Falls sample back to Earth, so it can be studied with the powerful instruments available in laboratories.”
More Mission Information
A key objective of Perseverance’s mission on Mars is astrobiology, including caching samples that may contain signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, to help pave the way for human exploration of the Red Planet and as the first mission to collect and cache Martian rock and regolith.
NASA’s Mars Sample Return Program, in cooperation with ESA (European Space Agency), is designed to send spacecraft to Mars to collect these sealed samples from the surface and return them to Earth for in-depth analysis.
The Mars 2020 Perseverance mission is part of NASA’s Moon to Mars exploration approach, which includes Artemis missions to the Moon that will help prepare for human exploration of the Red Planet.
NASA’s Jet Propulsion Laboratory, which is managed for the agency by Caltech, built and manages operations of the Perseverance rover.
For more about Perseverance:
science.nasa.gov/mission/mars-2020-perseverance
News Media Contacts
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
Karen Fox / Erin Morton
Headquarters, Washington
202-358-1600 / 202-805-9393
karen.c.fox@nasa.gov / erin.morton@nasa.gov
2024-103
Share
Details
Last Updated Jul 25, 2024 Related Terms
Perseverance (Rover) Astrobiology Jet Propulsion Laboratory Mars Mars 2020 Mars Sample Return (MSR) The Solar System Explore More
4 min read UPDATED: 10 Things for Mars 10
Scientists from around the world are gathering this week in California to take stock of…
Article 2 days ago 6 min read NASA-Funded Studies Explain How Climate Is Changing Earth’s Rotation
Article 6 days ago 3 min read New Evidence Adds to Findings Hinting at Network of Caves on Moon
An international team of scientists using data from NASA’s LRO (Lunar Reconnaissance Orbiter) has discovered…
Article 7 days ago Keep Exploring Discover Related Topics
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
-
Similar Videos
-
Check out these Videos
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.