
NASA astronaut Nick Hague participates in his second spacewalk to upgrade the International Space Station's power storage capacity.

NASA astronaut Christina Koch participates in her first spacewalk to upgrade the International Space Station's power storage capacity.

Illustration of NASA’s OCO-3 mounted on the underside of the International Space Station

This map shows solar-induced fluorescence (SIF) measured by OCO-2 from Aug. through Oct. 2014.

Illustration of OCO-3 on the space station collecting data in snapshot mode over the Los Angeles Basin.

In Alaska, 5 percent of the land is covered by glaciers that are losing a lot of ice and contributing…

APOD Science APOD APOD: 2019 April 2 – Space… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss…

NASA Administrator Jim Bridenstine is seen during a NASA town hall event, Monday, April 1, 2019 at NASA Headquarters in…

NASA astronaut Anne McClain displays a spacesuit glove that is part of an Extravehicular Mobility Unit, or spacesuit, worn during…

NASA astronaut Christina Koch participates in her first spacewalk to upgrade the International Space Station's power storage capacity.