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Robert Williams is a senior mechanical design engineer and the structures subject matter expert in the Engineering and Test Directorate at NASA’s Stennis Space Center. NASA/Danny Nowlin Living up to,

Explore Hubble 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

6 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s SPHEREx mission is observing the entire sky in 102 infrared colors, or wavelengths of light not visible to

X-ray: NASA/CXC/Northwestern Univ./F. Yusef-Zadeh et al; Radio: NRF/SARAO/MeerKat; Image Processing: NASA/CXC/SAO/N. Wolk Astronomers have discovered a likely explanation for a fracture in a huge cosmic “bone” in the Milky Way galaxy,

9 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA / Lillian Gipson/Getty Images THIS PAGE WAS UPDATED ON MAY 1, 2025(Added Advanced Air Vehicles Program Fellowship Opportunities.)

3 Min Read NASA Invests in Future STEM Workforce Through Space Grant Awards  NASA is awarding up to $870,000 annually to 52 institutions across the United States, the District of

Skywatching Skywatching Home What’s Up What to See Tonight Meteor Showers Eclipses Moon Guide More Tips & Guides Skywatching FAQ Night Sky Network Eta Aquarids & Waiting for a Nova! 

Cassiopeia A (Cas A) is a supernova remnant located about 11,000 light-years from Earth in the constellation Cassiopeia. It spans approximately 10 light-years. X-ray: NASA/CXC/SAO, NASA/JPL/Caltech/NuStar; Optical: NASA/STScI/HST; IR: NASA/STScI/JWST,

Explore This Section Projects Highlights Publications NASA Citizen Scientists Science Activation Resources 2 min read Amateur Radio Scientists Shine at the 2025 HamSCI Workshop A collage of Posters from HamSCI’s