Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

So the bottom line is that the gravity of the closer tidal bulge on the Earth is pulling the Moon forward, which increases ...

With advance warning, however, steps can be taken to reduce the risks. If an electrical grid is running near capacity, for ...

Much as we may treasure and proclaim our independence, we actually live in a protective bubble called the heliosphere.

Though the rings appear solid from afar, they’re actually a dynamic, rotating system of icy debris. One theory suggests they may be remnants of a moon or comet torn apart by Saturn's immense gravity.

Viewers will first see the moon take its first bite out of the sun at 1:29 p.m. ET (1729 GMT) on Sept. 21. Observers located in territories including southern New Zealand and Antarctica will see over ...

Solar eclipses occur when the moon gets between Earth and the sun. This causes the moon to cast a shadow onto Earth. A solar eclipse can only take place at the phase of new moon, but different factors ...

After solar activity spent several decades on the decrease, the number of sunspots, flares and coronal mass ejections is once ...

The bottom of the world is set to be front and center for a partial solar eclipse. Antarctica, New Zealand and a sliver of Australia are in prime position as ...

The sun has become more and more active over the last 16 years, in a turn that surprised scientists and could affect space ...

On Sept. 18, 1977, NASA's Voyager 1 spacecraft took a photo of Earth and the moon. It was the first time both the Earth and the moon were captured in a single frame. At the time, Voyager 1 was more ...

The solar system holds extraordinary wonders, from Voyager 1’s historic journey into interstellar space after traveling billions of miles, to Uranus spinning on its side with extreme seasons lasting ...