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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
https://youtu.be/63uNNcCpxHI How are we made of star stuff?
Well, the important thing to understand about this question is that it’s not an analogy, it’s literally true.
The elements in our bodies, the elements that make up our bones, the trees we see outside, the other planets in the solar system, other stars in the galaxy. These were all part of stars that existed well before our Sun and Earth and solar system were even formed.
The universe existed for billions of years before we did. And all of these elements that you see on the periodic table, you see carbon and oxygen and silicon and iron, the common elements throughout the universe, were all put there by previous generations of stars that either blew off winds like the Sun blows off a solar wind, or exploded in supernova explosions and thrust their elements throughout the universe.
These are the same things that we can trace with modern telescopes, like the Hubble Telescope and the James Webb Space Telescope, the Chandra X-ray Observatory. These are all elements that we can map out in the universe with these observatories and trace back to the same things that form us and the elemental abundances that we see in stars now are the same things that we see in the Earth’s crust, we see in asteroids. And so we know that these are the same elements that were once part of these stars.
So the question of, “How are we made of star stuff?”, in the words of Carl Sagan, “The cosmos is within us. We are made of star stuff. We are a way for the universe to know itself.”
[END VIDEO TRANSCRIPT]
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Last Updated Apr 28, 2025 Related Terms
General Astrophysics Astrophysics Division Chandra X-Ray Observatory Hubble Space Telescope James Webb Space Telescope (JWST) Origin & Evolution of the Universe Science Mission Directorate The Solar System The Universe Explore More
3 min read NASA Moon Observing Instrument to Get Another Shot at Lunar Ops
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By NASA
NASA astronaut and Expedition 73 Flight Engineer Jonny KimCredit: Gagarin Cosmonaut Training Center Students from Santa Monica, California, will connect with NASA astronaut Jonny Kim as he answers prerecorded science, technology, engineering, and mathematics-related questions aboard the International Space Station.
Watch the 20-minute space-to-Earth call at 12:10 p.m. EDT on Tuesday, April 29, on the NASA STEM YouTube Channel.
Media interested in covering the event must RSVP by 5 p.m., Friday, April 25, to Esmi Careaga at: ecareaga@smmusd.org or 805-651-3204 x71582.
The event is hosted by Santa Monica High School, Kim’s alma mater, and includes students from Roosevelt Elementary School and Lincoln Middle School in Santa Monica. The schools hope to inspire students to follow their dreams and explore their passions through curiosity, service, and interest in learning.
For more than 24 years, astronauts have continuously lived and worked aboard the space station, testing technologies, performing science, and developing skills needed to explore farther from Earth. Astronauts aboard the orbiting laboratory communicate with NASA’s Mission Control Center in Houston 24 hours a day through SCaN’s (Space Communications and Navigation) Near Space Network.
Important research and technology investigations taking place aboard the space station benefit people on Earth and lays the groundwork for other agency missions. As part of NASA’s Artemis campaign, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring Artemis Generation explorers and ensuring the United States continues to lead in space exploration and discovery.
See videos highlighting space station research at:
https://www.nasa.gov/stemonstation
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Gerelle Dodson
Headquarters, Washington
202-358-1600
gerelle.q.dodson@nasa.gov
Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov
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Last Updated Apr 23, 2025 LocationNASA Headquarters Related Terms
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By NASA
NASA astronaut and Expedition 72 Flight Engineer Don Pettit sets up camera hardware to photograph research activities inside the International Space Station’s Kibo laboratory module on March 15, 2025.Credit: NASA Media are invited to a news conference at 2 p.m. EDT Monday, April 28, at NASA’s Johnson Space Center in Houston where astronaut Don Pettit will share details of his recent mission aboard the International Space Station.
The news conference will stream live on NASA’s website. Learn how to stream NASA content through a variety of platforms.
To participate in person, U.S. media must contact the NASA Johnson newsroom no later than 5 p.m. Thursday, April 24, at 281-483-5111 or jsccommu@mail.nasa.gov. Media wishing to participate by phone must contact the newsroom no later than two hours before the start of the event. To ask questions by phone, media must dial into the news conference no later than 10 minutes prior to the start of the call. NASA’s media accreditation policy is available online.
Questions also may be submitted on social media during the news conference by using #AskNASA. Following the news conference, NASA will host a live question and answer session with Pettit on the agency’s Instagram. For more information, visit @NASA on social media.
Pettit returned to Earth on April 19 (April 20, Kazakhstan time), along with Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner. Pettit celebrated his 70th birthday on April 20. He spent 220 days in space as an Expedition 71/72 flight engineer, bringing his career total to 590 days in space during four spaceflights. Pettit and his crewmates completed 3,520 orbits of Earth over the course of their 93-million-mile journey. They also saw the arrival of six visiting spacecraft and the departure of seven.
During his time on orbit, Pettit conducted hundreds of hours of scientific investigations, including research to enhance on-orbit metal 3D printing capabilities, advance water sanitization technologies, explore plant growth under varying water conditions, and investigate fire behavior in microgravity, all contributing to future space missions.
He also spent time aboard the space station sharing his photography, often posting images to his X account. He took more than 670,000 photos during his stay.
Learn more about International Space Station research and operations at:
http://www.nasa.gov/station
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Joshua Finch / Claire O’Shea
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / claire.a.o’shea@nasa.gov
Chelsey Ballarte
Johnson Space Center, Houston
281-483-5111
chelsey.n.ballarte@nasa.gov
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Last Updated Apr 23, 2025 LocationNASA Headquarters Related Terms
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