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.

A stray comet from another star is swinging past Earth. Discovered over the summer, the comet known as 3I/Atlas will pass within 167 million miles of our planet on Friday.

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.

NASA launches TRACERS satellites to reveal how solar energy penetrates Earth's magnetic shield and triggers space storms.

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

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 astronaut Jonny Kim, who was born and raised in Los Angeles, returned to Earth Tuesday after 245 days in space. Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky were part of an eight-month science mission on the International Space Station.

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