"With only lunar soil and a basic ingredient from the sun — which is always spitting out hydrogen — there's a possibility of ...

Recent flybys of the fiery world refute a leading theory of its inner structure — and reveal how little is understood about ...

Skywatchers worldwide are in for a charming cosmic display before the sun rises Friday, as three celestial bodies will appear ...

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

Before sunrise on April 25, a slender waning crescent moon will appear left of Venus and Saturn to create the tilted happy face.

A rare alignment of the moon and three planets will give millions a reason to look up — and the view could leave stargazers ...

In the years since, Hubble has gathered more than 1.6 million observations and 430 terabytes of data. The telescope has ...

Earth Day is on Tuesday, April 22, this year. The annual observation is set aside to increase awareness around environmental ...

Apparently, it’s moving further away from the Earth each year. At an annual rate of 3.82 centimeters, the moon's creeping ...

Despite its Earth-like rivers and lakes of liquid methane, Saturn’s moon Titan seems oddly lacking in river deltas — ...

Through its "Moon to Mars" program, NASA plans to send the first crewed missions to Mars by the end of the next decade. To ...

The Lyrid meteor shower is set to peak in Michigan April 21-22, 2025, but clouds are likely to block viewing. Here's what to know.