An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

The Blue Ghost lunar lander, built by the Texas-based company Firefly Aerospace for NASA, launched to space on Jan. 15, and ...

While the planets are technically always "aligned" along the same plane in our sky, seeing so many at once is a special ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

The case of mistaken identity was quickly resolved, but astronomers say it shows the need for transparency around craft in ...

Before you can see those auroras in space, you have to pass a lot of tests. They put you through physical exams and ...

Because the period of an object does not depend on its mass, comets’ orbital periods remain unchanged due to mass loss.

The blossoming relationship between Trump and tech titan Elon Musk was on full display throughout Monday’s inauguration ...

Sky watchers are in for a treat this month as the stars align to give amateurs a shot to see six planets at once.

Comet ATLAS (C/2024 G3) came three times closer to the sun than Mercury on January 13—and this may have changed it ...

Both NASA and Firefly Aerospace say Blue Ghost remains healthy as it prepares to make for lunar orbit sometime next month.

Galactic Energy, a private rocket maker based in Beijing, successfully launched a mission Monday afternoon, deploying five ...