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By NASA
5 min read
How NASA Science Data Defends Earth from Asteroids
Artist’s impression of NASA’s DART mission, which collided with the asteroid Dimorphos in 2022 to test planetary defense techniques. Open science data practices help researchers identify asteroids that pose a hazard to Earth, opening the possibility for deflection should an impact threat be identified. NASA/Johns Hopkins APL/Steve Gribben The asteroid 2024 YR4 made headlines in February with the news that it had a chance of hitting Earth on Dec. 22, 2032, as determined by an analysis from NASA’s Center for Near Earth Object Studies (CNEOS) at the agency’s Jet Propulsion Laboratory in Southern California. The probability of collision peaked at over 3% on Feb. 18 — the highest ever recorded for an object of its size. This sparked concerns about the damage the asteroid might do should it hit Earth.
New data collected in the following days lowered the probability to well under 1%, and 2024 YR4 is no longer considered a potential Earth impactor. However, the event underscored the importance of surveying asteroid populations to reveal possible threats to Earth. Sharing scientific data widely allows scientists to determine the risk posed by the near-Earth asteroid population and increases the chances of identifying future asteroid impact hazards in NASA science data.
“The planetary defense community realizes the value of making data products available to everyone,” said James “Gerbs” Bauer, the principal investigator for NASA’s Planetary Data System Small Bodies Node at the University of Maryland in College Park, Maryland.
How Scientists Spot Asteroids That Could Hit Earth
Professional scientists and citizen scientists worldwide play a role in tracking asteroids. The Minor Planet Center, which is housed at the Smithsonian Astrophysical Observatory in Cambridge, Massachusetts, collects and verifies vast numbers of asteroid and comet position observations submitted from around the globe. NASA’s Small Bodies Node distributes the data from the Minor Planet Center for anyone who wants to access and use it.
A near-Earth object (NEO) is an asteroid or comet whose orbit brings it within 120 million miles of the Sun, which means it can circulate through Earth’s orbital neighborhood. If a newly discovered object looks like it might be an NEO, information about the object appears on the Minor Planet Center’s NEO Confirmation Page. Members of the planetary science community, whether or not they are professional scientists, are encouraged to follow up on these objects to discover where they’re heading.
The asteroid 2024 YR4 as viewed on January 27, 2025. The image was taken by the Magdalena Ridge 2.4m telescope, one of the largest telescopes in NASA’s Planetary Defense network. Asteroid position information from observations such as this one are shared through the Minor Planet Center and NASA’s Small Bodies Node to help scientists pinpoint the chances of asteroids colliding with Earth. NASA/Magdalena Ridge 2.4m telescope/New Mexico Institute of Technology/Ryan When an asteroid’s trajectory looks concerning, CNEOS alerts NASA’s Planetary Defense Coordination Office at NASA Headquarters in Washington, which manages NASA’s ongoing effort to protect Earth from dangerous asteroids. NASA’s Planetary Defense Coordination Office also coordinates the International Asteroid Warning Network (IAWN), which is the worldwide collaboration of asteroid observers and modelers.
Orbit analysis centers such as CNEOS perform finer calculations to nail down the probability of an asteroid colliding with Earth. The open nature of the data allows the community to collaborate and compare, ensuring the most accurate determinations possible.
How NASA Discovered Risks of Asteroid 2024 YR4
The asteroid 2024 YR4 was initially discovered by the NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) survey, which aims to discover potentially hazardous asteroids. Scientists studied additional data about the asteroid from different observatories funded by NASA and from other telescopes across the IAWN.
At first, 2024 YR4 had a broad uncertainty in its future trajectory that passed over Earth. As the planetary defense community collected more observations, the range of possibilities for the asteroid’s future position on Dec. 22, 2032 clustered over Earth, raising the apparent chances of collision. However, with the addition of even more data points, the cluster of possibilities eventually moved off Earth.
This visualization from NASA’s Center for Near Earth Object Studies shows the evolution of the risk corridor for asteroid 2024 YR4, using data from observations made up to Feb. 23, 2025. Each yellow dot represents the asteroid’s possible location on Dec. 22, 2032. As the range of possible locations narrowed, the dots at first converged on Earth, before skewing away harmlessly. NASA/JPL/CNEOS Having multiple streams of data available for analysis helps scientists quickly learn more about NEOs. This sometimes involves using data from observatories that are mainly used for astrophysics or heliophysics surveys, rather than for tracking asteroids.
“The planetary defense community both benefits from and is beneficial to the larger planetary and astronomy related ecosystem,” said Bauer, who is also a research professor in the Department of Astronomy at the University of Maryland. “Much of the NEO survey data can also be used for searching astrophysical transients like supernova events. Likewise, astrophysical sky surveys produce data of interest to the planetary defense community.”
How Does NASA Stop Asteroids From Hitting Earth?
In 2022, NASA’s DART (Double Asteroid Redirection Test) mission successfully impacted with the asteroid Dimorphos, shortening the time it takes to orbit around its companion asteroid Didymos by 33 minutes. Didymos had no chance of hitting Earth, but the DART mission’s success means that NASA has a tested technique to consider when addressing a future asteroid potential impact threat.
Artist’s impression of NASA’s upcoming NEO Surveyor mission, which will search for potentially hazardous near-Earth objects. The mission will follow open data practices to improve the chances of identifying dangerous asteroids. NASA/JPL-Caltech To increase the chances of discovering asteroid threats to Earth well in advance, NASA is working on a new space-based observatory, NEO Surveyor, which will be the first spacecraft specifically designed to look for asteroids and comets that pose a hazard to Earth. The mission is expected to launch in the fall of 2027, and the data it collects will be available to everyone through NASA archives.
“Many of the NEOs that pose a risk to Earth remain to be found,” Bauer said. “An asteroid impact has a very low likelihood at any given time, but consequences could be high, and open science is an important component to being vigilant.”
For more information about NASA’s approach to sharing science data, visit:
https://science.nasa.gov/open-science.
By Lauren Leese
Web Content Strategist for the Office of the Chief Science Data Officer
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Last Updated Apr 10, 2025 Related Terms
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The Chief Master Sgt. of the Space Force and Chief Master Sgt. of the Air Force testified before the House Committee on Appropriations, Military Construction, Veterans Affairs and Related Agencies Subcommittee.
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By NASA
Nick Kopp is a Dragon flight lead in the Transportation Integration Office at Johnson Space Center in Houston. He is currently leading NASA’s efforts to prepare, launch, and return the agency’s 32nd SpaceX commercial resupply services mission. He works directly with SpaceX and collaborates with NASA’s many internal, external, and international partners to ensure the success of this and other cargo missions to the International Space Station.
Read on to learn about his career with NASA and more!
Nick Kopp’s official portrait.NASA/Bill Stafford The time and effort spent building, maintaining, and conducting science on the International Space Station is spent by people in our community and communities around the world to further humanity's collective understanding of the universe around us.
Nick Kopp
Transportation Integration Office Flight Lead
Where are you from?
I am from Cleveland, Ohio.
Tell us about your role at NASA.
I work directly with SpaceX to ensure the Dragon cargo spacecraft meets NASA’s requirements to visit the space station. I also collaborate with NASA’s various partners who are safely flying science investigations and other cargo to and from the space station. For the upcoming flight, I’ve worked extensively with SpaceX to prepare to return the Dragon cargo spacecraft off the coast of California.
How would you describe your job to family or friends who may not be familiar with NASA?
I’m responsible for getting stuff to and from the International Space Station safely.
How long have you been working for NASA?
I have been working for NASA for about 15 years at both Marshall Space Flight Center in Alabama and Johnson Space Center in Texas.
What advice would you give to young individuals aspiring to work in the space industry or at NASA?
It takes so many different people with all kinds of different skills working together to make missions happen. I would suggest looking at NASA’s websites to find the skill or task that makes you want to learn more and then focusing your energy into that skill. Surround yourself with people with similar goals. Connect with people in the industry and ask them questions. You are in control of your destiny!
Nick Kopp in front of the International Space Station Payload Operations Center at the agency’s Marshall Space Flight Center in Huntsville, Alabama. What was your path to NASA?
I’ve wanted to work at NASA since I was a kid and my grandfather showed me the Moon through his home-built telescope. I studied aerospace engineering at the University of Illinois, where I joined Students for the Exploration and Development of Space and attended a conference at NASA’s Goddard Space Flight Center in Maryland. I met some folks from the Payload Operations Integration Center and learned of the awesome space station science operations at Marshall. I was lucky enough to be chosen for a contractor job working directly with astronauts on the space station to conduct science experiments!
Is there someone in the space, aerospace, or science industry that has motivated or inspired you to work for the space program? Or someone you discovered while working for NASA who inspires you?
After working with him from the ground when he was aboard the space station, I was lucky enough to spend many overnight shifts getting to know NASA astronaut and Flight Director TJ Creamer. TJ’s path to NASA and his servant leadership have left an ongoing legacy for people at the agency. His general attitude, extreme competence, friendly demeanor, and genuine care for people around him continue to inspire me every day to become a great leader.
What is your favorite NASA memory?
My favorite NASA memory is being selected as a payload operations director on the International Space Station Payload Operations and Integration Center flight control team. I looked up to those in this position for 10 years and did everything I could to gather the skills and knowledge I needed to take on the role. I became responsible for the minute-to-minute operations of astronauts conducting science investigations on the space station. I vividly remember the joy I felt learning of the news of my assignment, taking my first shift, my first conversation with an astronaut in space, and the bittersweet decision to leave and continue my career goals at NASA in a different role.
Nick Kopp, right, behind a console in the International Space Station Payload Operations Integration Center at the agency’s Marshall Space Flight Center. What do you love sharing about station? What’s important to get across to general audiences to help them understand the benefits to life on Earth?
Although it takes place off the planet, research on the space station is conducted for people on Earth. The time and effort spent building, maintaining, and conducting science on the International Space Station is spent by people in our community and communities around the world to further humanity’s collective understanding of the universe around us. When we understand more about science, we can be more successful. So many people around the planet have had life-changing benefits from experiments that can only be done by people conducting research in microgravity, above the atmosphere, where you can view most of Earth.
If you could have dinner with any astronaut, past or present, who would it be?
I would have dinner with anyone from the Apollo 13 crew. I’d love to learn how they felt that NASA’s culture drove the outcome of that mission.
Do you have a favorite space-related memory or moment that stands out to you?
While working a night shift at the operations center in Huntsville, Alabama, we were monitoring payloads returning to Earth on a Dragon cargo spacecraft. We took a quick break outside the control center to watch as the spacecraft re-entered Earth’s atmosphere above us on its way to splash down off the coast of Florida. It was a clear night. As the spacecraft flew overhead, we saw the ablative heat shield create a shimmering trail of fire and sparkles that stretched across the whole night sky. It looked as though Tinker Bell just flew over us!
What are some of the key projects you’ve worked on during your time at NASA? What have been your favorite?
Some of my favorite projects I’ve worked on include:
Serving as the International Space Station Program’s representative as flight lead for NASA’s SpaceX Crew-8 mission Troubleshooting unexpected results when conducting science on the space station Writing instructions for astronauts filming a virtual reality documentary on the space station Assessing design changes on the Space Launch System rocket’s core stage Managing and training a team of flight controllers Helping NASA move Dragon spacecraft returns from Florida to California Nick Kopp enjoys sailing on his days off. What are your hobbies/things you enjoy outside of work?
I love playing board games with my wife, sailing, flying, traveling around the world, and learning about leadership and project management theory.
Day launch or night launch?
The Crew-8 night launch, specifically, where the Falcon 9 booster landed just above me!
Favorite space movie?
Spaceballs
NASA “worm” or “meatball” logo?
Meatball
Every day, we’re conducting exciting research aboard our orbiting laboratory that will help us explore further into space and bring benefits back to people on Earth. You can keep up with the latest news, videos, and pictures about space station science on the Station Research & Technology news page. It’s a curated hub of space station research digital media from Johnson and other centers and space agencies.
Sign up for our weekly email newsletter to get the updates delivered directly to you.
Follow updates on social media at @ISS_Research on Twitter, and on the space station accounts on Facebook and Instagram.
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA and SpaceX are launching the company’s 32nd commercial resupply services mission to the International Space Station later this month, bringing a host of new research to the orbiting laboratory. Aboard the SpaceX Dragon spacecraft are experiments focused on vision-based navigation, spacecraft air quality, materials for drug and product manufacturing, and advancing plant growth with less reliance on photosynthesis.
This and other research conducted aboard the space station advances future space exploration, including missions to the Moon and Mars, and provides many benefits to humanity.
Investigations traveling to the space station include:
Robotic spacecraft guidance
Smartphone Video Guidance Sensor-2 (SVGS-2) uses the space station’s Astrobee robots to demonstrate using a vision-based sensor developed by NASA to control a formation flight of small satellites. Based on a previous in-space demonstration of the technology, this investigation is designed to refine the maneuvers of multiple robots and integrate the information with spacecraft systems.
Potential benefits of this technology include improved accuracy and reliability of systems for guidance, navigation, and control that could be applied to docking crewed spacecraft in orbit and remotely operating multiple robots on the lunar or Martian surface.
Two of the space station’s Astrobee robots are used to test a vision-based guidance system for Smartphone Video Guidance Sensor (SVGS)NASA Protection from particles
During spaceflight, especially long-duration missions, concentrations of airborne particles must be kept within ranges safe for crew health and hardware performance. The Aerosol Monitors investigation tests three different air quality monitors in space to determine which is best suited to protect crew health and ensure mission success. The investigation also tests a device for distinguishing between smoke and dust. Aboard the space station, the presence of dust can cause false smoke alarms that require crew member response. Reducing false alarms could save valuable crew time while continuing to protect astronaut safety.
Better materials, better drugs
The DNA Nano Therapeutics-Mission 2 produces a special type of molecule formed by DNA-inspired, customizable building blocks known as Janus base nanomaterials. It also evaluates how well the materials reduce joint inflammation and whether they can help regenerate cartilage lost due to arthritis. These materials are less toxic, more stable, and more compatible with living tissues than current drug delivery technologies.
Environmental influences such as gravity can affect the quality of these materials and delivery systems. In microgravity, they are larger and have greater uniformity and structural integrity. This investigation could help identify the best formulations and methods for cost-effective in-space production. These nanomaterials also could be used to create novel systems targeting therapy delivery that improves patient outcomes with fewer side effects.
Stem cells grown along the Janus base nanomaterials (JBNs) made aboard the International Space Station.University of Connecticut Next-generation pharmaceutical nanostructures
The newest Industrial Crystallization Cassette (ADSEP-ICC) investigation adds capabilities to an existing protein crystallization facility. The cassette can process more sample types, including tiny gold particles used in devices that detect cancer and other diseases or in targeted drug delivery systems. Microgravity makes it possible to produce larger and more uniform gold particles, which improves their use in research and real-life applications of technologies related to human health.
Helping plants grow
Rhodium USAFA NIGHT examines how tomato plants respond to microgravity and whether a carbon dioxide replacement can reduce how much space-grown plants depend on photosynthesis. Because photosynthesis needs light, which requires spacecraft power to generate, alternatives would reduce energy use. The investigation also examines whether using supplements increases plant growth on the space station, which has been observed in preflight testing on Earth. In future plant production facilities aboard spacecraft or on celestial bodies, supplements could come from available organic materials such as waste.
Understanding how plants adapt to microgravity could help grow food during long-duration space missions or harsh environments on Earth.
Hardware for the Rhodium Plant LIFE, which was the first in a series used to study how space affects plant growth.NASA Atomic clocks in space
An ESA (European Space Agency) investigation, Atomic Clock Ensemble in Space (ACES), examines fundamental physics concepts such as Einstein’s theory of relativity using two next-generation atomic clocks operated in microgravity. Results have applications to scientific measurement studies, the search for dark matter, and fundamental physics research that relies on highly accurate atomic clocks in space. The experiment also tests a technology for synchronizing clocks worldwide using global navigation satellite networks.
An artist’s concept shows the Atomic Clock Ensemble in Space hardware mounted on the Earth-facing side of the space station’s exterior.ESA Download high-resolution photos and videos of the research mentioned in this article.
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