The Japanese Aerospace Exploration Agency ( JAXA) declared its Akatsuki spacecraft dead on Tuesday (Oct. 28), more than a ...

For nearly a decade, Japan’s Akatsuki spacecraft circled Venus, offering scientists rare glimpses into the planet’s turbulent ...

It's largely agreed that the moon was created around 4.5 billion years ago when a protoplanet collided with early molten ...

When we think of a day, we usually imagine 24 hours. But did you know that not all planets have days that last 24 hours? In fact, the length of a day can be very different depending on the planet.

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

Contrary to allegations that 31/ATLAS is potentially hostile alien tech, the Manhattan-sized comet could provide potentially ...

Regardless of whether it is a natural comet or a man-made object from another civilization, ATLAS could be the key to ...

Two gravitational wave signals explain why the heavier black holes of the causal pairs did not originate in a stellar ...

A NASA-backed planetary defense group has reportedly begun efforts to pinpoint comet 3I/ATLAS after it was observed emitting ...

Jupiter is still a month from opposition, rising about 9 p.m. in the NE as November begins, and right after sunset by Thanksgiving. Saturn is the only planetary highlight in the evening now, in ...

Need a conversation starter? These fun, niche facts (from Cleopatra's timeline to chainsaws' surprising origin) will make you ...

The Manhattan-sized comet may offer potentially life-saving intelligence, despite claims that 31/ATLAS is potentially hostile ...