NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their ...

The stealthy startup plans to use a network of satellites to harvest sunlight and send it to Earth using infrared lasers.

The image shows a good example of the phenomenon called airglow.

NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky landed on Russia's Soyuz MS-27 on Dec.

A 2023 astronaut photo shows the moment the Alabama River briefly morphed into an undulating golden serpent, similar in shape ...

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

Fleets of satellites interfere with snapshots taken by Earth-bound observatories. But a new study suggests these orbiters ...

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other ...

Kim officially became an astronaut in 2017. Expedition 72 and Expedition 73 marked Kim’s first visit to the ISS, where he ...

For centuries, Europeans thought that eternal daylight saturated the cosmos. The shift to a dark universe has had a profound ...

New images taken by the Hubble Space Telescope and a Jupiter-bound mission showcase interstellar comet 3I/ATLAS ahead of its ...

A space solar power startup has emerged from stealth after demonstrating a key technology for its plans to transmit power from space to the Earth.