A famously unlucky date is getting a cosmic twist. NASA says the asteroid Apophis will safely pass close to Earth on Friday, ...

This occurrence will be the closest approach to Earth by an asteroid of this size that scientists have known about in advance ...

While safety in numbers is a defining trait of low Earth orbit satellites, including those in the Space Development Agency's ...

It's been decades since humanity first sent a satellite into orbit, and during all this time we kind of become experts at it. What we still haven't mastered yet is extending the life of these ...

A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day).

Per NASA’s updated asteroid watch list, Earth will encounter two airplane-sized NEOs today, on April 29, 2026. Asteroid 2026 ...