To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

Astronomers describe Mercury as an "inferior planet", because its orbital path around the sun is much closer than that of ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Discover why Earth's farthest distance from the sun coincides with summer heat, then grab your binoculars for a week of ...

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.

Celebrate the Fourth with the Fireworks Galaxy, then check out the Demon Star Algol and the Full Buck Moon in the sky this ...

Mercury is notoriously difficult to see from Earth, thanks to its proximity to the Sun. But on July 4, Mercury reaches its ...

Earth reaches aphelion, its farthest point from the sun, at 2:54 p.m. on July 3. At that moment we’ll be 94.5 million miles from our parent star.

The best time to spot Venus for stargazers in the U.S. is during the pre-dawn hours on May 31 and June 1, when the planet will appear as a bright, magnitude-4.3 morning star rising over the ...

More of the galaxy's mysterious Unknown Regions have been mapped — and look, there's Exegol, the Sith planet from Rise of ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.