NASA’s Europa Clipper spacecraft has sent back its first starry image, a significant milestone as it makes its way toward Jupiter’s moon Europa. The image, released by NASA this week, is a mosaic of a ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Mars will appear to make an ultraclose approach to the moon on Sunday, after Jupiter had a turn earlier this week. Here's how ...

"Temperamental" stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

If the thought of any planet going retrograde causes you to steel yourself for a surge of frustration, crossed wires and challenges galore, you're far from alone. But one of the coolest things about ...

With an assist from the NEID spectrograph, a team of astronomers have confirmed the existence of exoplanet Gaia-4b—one of the ...