NASA is floating a notional mission that would send three astronauts to a near-Earth asteroid using SpaceX hardware, and the timeline reads like a blueprint for the future. Multiple Starship tankers would first fill an orbital propellant depot,

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet as it ever will.

NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their Soyuz spacecraft landing in the frozen steppes of Kazakhstan on Dec. 9 to complete an eight-month stay in space.

On Dec. 16, 1962, NASA launched the Explorer 16 spacecraft to study micrometeoroids near Earth. [‘On This Day in Space’ Video Series on Space.com] The mission would determine how likely it would be for spacecraft to get damaged by the small space rocks and dust particles around the Earth,

Kim officially became an astronaut in 2017. Expedition 72 and Expedition 73 marked Kim’s first visit to the ISS, where he served as a flight engineer and flight surgeon for eight months while helping to conduct a number of scientific and technological research projects.

NASA seeks capabilities that enable the delivery of systems allowing crews to detect and interpret anomalous spacecraft behavior in real-time.

The 84-foot-diameter space rock—dubbed "2025 XM"—is hurtling through the solar system at a zippy 9,753 miles per hour.

NASA’s latest measurements show that Earth is reflecting less sunlight back into space, a subtle dimming that carries outsized consequences for the climate system. At the same time, cleaner air for roughly 1.