For the first time in more than half a century, a crew of astronauts is on the cusp of heading back toward the lunar surface, ...

For five years, a slow but stubborn air leak in the Russian segment of the International Space Station quietly undercut ...

Mike Stewart] powers up a thrust meter from an Apollo lunar module. This bit of kit passed inspection on September 25, 1969.

NASA Earth Science Communications announced closure of The Earth Observer in December 2025. It preserves archives that document nearly 37 years of EOS missions and satellite data.