As sunspots emerge on the sun's surface close to its equator, their orientations will match the old magnetic field, while ...

Late on March 13 and on into the early hours of March 14 the moon will turn a spooky red color in the skies above the U.S.

A once-in-a-lifetime comet is approaching the sun — and it will be visible for the first time in 160,000 years. The comet ...

Earth is now closer to the sun than at any other time of the year. Here's why our planet's axial tilt, not proximity to the ...

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...

Naturally, the same goes for the sunset. Since the winter solstice, the sun has been setting progressively later at a faster ...

G3 (ATLAS) should be visible from the southern hemisphere, and possibly also the northern hemisphere, over the next few days ...

In the summer of 1831, an enormous volcanic eruption spewed sulfur gas into Earth’s atmosphere. The particles scattered ...

At 8:07 p.m. Monday, stargazers in Chicago will see Mars disappear behind the moon and reappear on the other side of the moon ...

On Monday night you may have a chance to witness the moon obscuring the Red Planet at its brightest, as well as a comet’s ...