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Credit: NASA NASA has selected Plug Power, Inc., of Slingerlands, New York, and Air Products and Chemicals, Inc., of Allentown, Pennsylvania, to supply up to approximately 36,952,000 pounds of liquid

Explore This Section Science Science Activation 10 Years of Students Helping… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science   3 min read

This NASA/ESA Hubble Space Telescope image features a galaxy, NGC 2775, that’s hard to categorize. ESA/Hubble & NASA, F. Belfiore, J. Lee and the PHANGS-HST Team This NASA/ESA Hubble Space Telescope image

llustration of BioSentinel’s spacecraft flying past the Moon. NASA/Daniel Rutter Editor’s Note: This article was updated Nov. 21, 2025 shortly after BioSentinel’s mission marked three years of operation in deep space.

8 Min Read 25 Years of Scientific Discovery Aboard the International Space Station November marks 25 years of human presence aboard the International Space Station, a testament to international collaboration

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

2 Min Read Europa Clipper Captures Uranus With Star Tracker Camera PIA26544 Credits: NASA/JPL-Caltech Photojournal Navigation Science Photojournal Europa Clipper Captures Uranus… Photojournal Home Photojournal Search Latest Content Galleries Feedback