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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Shauntina Lilly, a NASA Glenn public affairs officer, speaks to students about NASA’s available internships and educational resources during the STEM Goes Red for Girls event at Great Lakes Science Center, home of the NASA Glenn Visitor Center, on Oct. 21.Credit: NASA/Debbie Welch NASA’s Glenn Research Center in Cleveland supported this year’s STEM Goes Red for Girls event at Great Lakes Science Center on Oct. 21. The program provides seventh and eighth grade students exposure to some of Greater Cleveland’s leading STEM companies. The event also featured a hands-on exhibitor fair, speed mentoring, and educational classes.
Hosted by the American Heart Association, this year’s event welcomed its largest audience to date with 352 students and educators from 32 schools within Northeast Ohio. NASA Glenn’s presence focused heavily on internships and career advice, but also highlighted the center’s work with the Space Communications and Navigation program’s Deep Space Network. Glenn’s Julie Sufka also served as a mentor, speaking to young girls about STEM opportunities in mathematics.
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By NASA
Learn Home Bundling the Best of… For Educators Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 3 min read
Bundling the Best of Heliophysics Education: DigiKits for Physics and Astronomy Teachers
For nearly a decade, the American Association of Physics Teachers (AAPT) has been working to bring together resources through its DigiKits–multimedia collections of vetted high-quality resources for teachers and their students. These resources are toolkits, allowing teachers to pick and choose interesting content to support their instruction. As a partner with the NASA Heliophysics Education Activation Team (HEAT), this work has directly supported the bundling of digital content around heliophysics lessons created by the AAPT team.
As an example, AAPT’s most recent DigiKit publication, Auroral Currents Science (Figure 1), was developed for educators of advanced high school students and university physics/astronomy majors. DigiKits materials are collected by digital content specialist, Caroline Hall, who searches for high-quality, open digital content and checks it for accuracy and accessibility. The Auroral Currents DigiKit centers around a lecture tutorial that gives students the opportunity to practice and extend their knowledge of magnetic fields produced by current-carrying wires, and relating those understandings to auroral currents – the primary phenomenon underlying the dramatic auroral light shows seen in the sky over the past months.
The corresponding DigiKit includes a collection of relevant simulations, videos/animations, and other teacher resources for background that can help to teach the content in the primary lesson. The DigiKit highlights NASA’s forthcoming Electrojet Zeeman Imaging Explorer (EZIE) mission, including an animation of the relationship between the Earth and space, an explanation of Earth’s electrojets and a visualization of the spacecraft. It also includes links to NASA’s ongoing Magnetospheric Multiscale spacecraft video explanation of magnetic reconnection, among many other useful resources that can be shown in the classroom or explored individually by students. Unique to this DigiKit are recent science news articles covering 2024’s spectacular auroral displays.
The light in the aurora comes from atoms in the ionosphere that have been excited by collisions with electrons that were accelerated between 6000 km and 20000 km above Earth’s surface. Those electrons carry electric currents from space along the magnetic field, but the currents flow horizontally some distance through the ionosphere at about 100-150 km in altitude before returning to space. We call those currents the ionospheric electrojets, and we can see the magnetic effects of the electrojets because electric currents are the source of magnetic fields. The AAPT digikit allows students to explore the magnetic signature of the electrojets and determine the size and location of the currents.
As a result of participation in NASA HEAT, AAPT has produced ten DigiKits, all linked below and available alongside the collection of other tutorials/core resources on the AAPT NASA HEAT page. Although the DigiKits are directed toward teachers, and the lessons are intended for standard classroom contexts, the resources can also be a great introduction to NASA-related concepts and modern science ideas for the general public.
Mechanics
Sunspots DigiKit Coronal Mass Ejections DigiKit Solar Energetic Particles DigiKit Light and Optics
Star Spectra DigiKit Exoplanet Atmospheres DigiKit Habitable Zone Planets DigiKit Magnetism
Planetary Magnetism DigiKit Energy of a Magnetic Field and Solar Flares DigiKit Auroral Currents DigiKit Eclipses
Eclipse Science DigiKit Are you an educator curious to learn more? Register for AAPT’s monthly mini webinar series, with the next event on November 9, 2024, featuring the Auroral Currents DigiKit core activity.
NASA HEAT is part of the NASA Science Activation Program portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn
Figure 1: Cover image of Auroral Currents DigiKit. Caroline Hall/AAPT NASA-HEAT Share
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Last Updated Nov 05, 2024 Editor NASA Science Editorial Team Related Terms
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By NASA
4 min read
Final Venus Flyby for NASA’s Parker Solar Probe Queues Closest Sun Pass
On Wednesday, Nov. 6, 2024, NASA’s Parker Solar Probe will complete its final Venus gravity assist maneuver, passing within 233 miles (376 km) of Venus’ surface. The flyby will adjust Parker’s trajectory into its final orbital configuration, bringing the spacecraft to within an unprecedented 3.86 million miles of the solar surface on Dec. 24, 2024. It will be the closest any human made object has been to the Sun.
Parker’s Venus flybys have become boons for new Venus science thanks to a chance discovery from its Wide-Field Imager for Parker Solar Probe, or WISPR. The instrument peers out from Parker and away from the Sun to see fine details in the solar wind. But on July 11, 2020, during Parker’s third Venus flyby, scientists turned WISPR toward Venus in hopes of tracking changes in the planet’s thick cloud cover. The images revealed a surprise: A portion of WISPR’s data, which captures visible and near infrared light, seemed to see all the way through the clouds to the Venusian surface below.
“The WISPR cameras can see through the clouds to the surface of Venus, which glows in the near-infrared because it’s so hot,” said Noam Izenberg, a space scientist at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland.
Venus, sizzling at approximately 869 degrees Fahrenheit (about 465 C), was radiating through the clouds.
The WISPR images from the 2020 flyby, as well as the next flyby in 2021, revealed Venus’ surface in a new light. But they also raised puzzling questions, and scientists have devised the Nov. 6 flyby to help answer them.
Left: A series of WISPR images of the nightside of Venus from Parker Solar Probe’s fourth flyby showing near infrared emissions from the surface. In these images, lighter shades represent warmer temperatures and darker shades represent cooler. Right: A combined mosaic of radar images of Venus’ surface from NASA’s Magellan mission, where the brightness indicates radar properties from smooth (dark) to rough (light), and the colors indicate elevation from low (blue) to high (red). The Venus images correspond well with data from the Magellan spacecraft, showing dark and light patterns that line up with surface regions Magellan captured when it mapped Venus’ surface using radar from 1990 to 1994. Yet some parts of the WISPR images appear brighter than expected, hinting at extra information captured by WISPR’s data. Is WISPR picking up on chemical differences on the surface, where the ground is made of different material? Perhaps it’s seeing variations in age, where more recent lava flows added a fresh coat to the Venusian surface.
“Because it flies over a number of similar and different landforms than the previous Venus flybys, the Nov. 6 flyby will give us more context to evaluate whether WISPR can help us distinguish physical or even chemical properties of Venus’ surface,” Izenberg said.
After the Nov. 6 flyby, Parker will be on course to swoop within 3.8 million miles of the solar surface, the final objective of the historic mission first conceived over 65 years ago. No human-made object has ever passed this close to a star, so Parker’s data will be charting as-yet uncharted territory. In this hyper-close regime, Parker will cut through plumes of plasma still connected to the Sun. It is close enough to pass inside a solar eruption, like a surfer diving under a crashing ocean wave.
“This is a major engineering accomplishment,” said Adam Szabo, project scientist for Parker Solar Probe at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
The closest approach to the Sun, or perihelion, will occur on Dec. 24, 2024, during which mission control will be out of contact with the spacecraft. Parker will send a beacon tone on Dec. 27, 2024, to confirm its success and the spacecraft’s health. Parker will remain in this orbit for the remainder of its mission, completing two more perihelia at the same distance.
Parker Solar Probe is part of NASA’s Living with a Star program to explore aspects of the Sun-Earth system that directly affect life and society. The Living with a Star program is managed by the agency’s Goddard Space Flight Center in Greenbelt, Maryland, for NASA’s Science Mission Directorate in Washington. The Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, manages the Parker Solar Probe mission for NASA and designed, built, and operates the spacecraft.
By Miles Hatfield
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Nov 04, 2024 Related Terms
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By European Space Agency
ESA’s solar eclipse-making Proba-3 mission is about to leave Europe, to head to its launch site in India. The mission’s two spacecraft – which will manoeuvre precisely in Earth orbit so that one casts a shadow onto the other – have departed the facilities of Redwire Space in Kruibeke, Belgium. The pair will be flown to the Satish Dhawan Space Centre, near Chennai, for the launch campaign to begin.
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Perseverance rover captured the silhouette of the Martian moon Phobos as it passed in front of the Sun on Sept. 30, 2024. The video shows the transit speeded up by four times, followed by the eclipse in real time. NASA/JPL-Caltech/ASU/MSSS/SSI The tiny, potato-shaped moon Phobos, one of two Martian moons, cast a silhouette as it passed in front of the Sun, creating an eye in Mars’ sky.
From its perch on the western wall of Mars’ Jezero Crater, NASA’s Perseverance rover recently spied a “googly eye” peering down from space. The pupil in this celestial gaze is the Martian moon Phobos, and the iris is our Sun.
Captured by the rover’s Mastcam-Z on Sept. 30, the 1,285th Martian day of Perseverance’s mission, the event took place when the potato-shaped moon passed directly between the Sun and a point on the surface of Mars, obscuring a large part of the Sun’s disc. At the same time that Phobos appeared as a large black disc rapidly moving across the face of the Sun, its shadow, or antumbra, moved across the planet’s surface.
Astronomer Asaph Hall named the potato-shaped moon in 1877, after the god of fear and panic in Greek mythology; the word “phobia” comes from Phobos. (And the word for fear of potatoes, and perhaps potato-shaped moons, is potnonomicaphobia.) He named Mars’ other moon Deimos, after Phobos’ mythological twin brother.
Roughly 157 times smaller in diameter than Earth’s Moon, Phobos is only about 17 miles (27 kilometers) at its widest point. Deimos is even smaller.
Rapid Transit
Because Phobos’ orbit is almost perfectly in line with the Martian equator and relatively close to the planet’s surface, transits of the moon occur on most days of the Martian year. Due to its quick orbit (about 7.6 hours to do a full loop around Mars), a transit of Phobos usually lasts only 30 seconds or so.
This is not the first time that a NASA rover has witnessed Phobos blocking the Sun’s rays. Perseverance has captured several Phobos transits since landing at Mars’ Jezero Crater in February 2021. Curiosity captured a video in 2019. And Opportunity captured an image in 2004.
By comparing the various images, scientists can refine their understanding of the moon’s orbit to learn how it’s changing. Phobos is getting closer to Mars and is predicted to collide with it in about 50 million years.
More About Perseverance
Arizona State University leads the operations of the Mastcam-Z instrument, working in collaboration with Malin Space Science Systems in San Diego, on the design, fabrication, testing, and operation of the cameras, and in collaboration with the Niels Bohr Institute of the University of Copenhagen on the design, fabrication, and testing of the calibration targets.
A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith (broken rock and dust).
Subsequent NASA missions, in cooperation with ESA (European Space Agency), would 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 in Pasadena, California, built and manages operations of the Perseverance rover.
Space Science Institute produced this video.
For more about Perseverance:
https://mars.nasa.gov/mars2020
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Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
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agle@jpl.nasa.gov
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Last Updated Oct 30, 2024 Related Terms
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