Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars.

The best events these next two weeks are Venus attaining its highest sunset or nightfall elevation, Mars coming its closest ...

The seven planets will not be perfectly aligned, but will appear in an arc across the sky due to their orbital plane in the ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

What better way to end than with some examples of said beauty and utility? After all that reading, we'll leave you with a few glamour shots of our favorite nebula: Messier 16, better known as the ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the ...

Venus and Saturn will be in conjunction this weekend, appearing side by side in the night sky during January's post-sunset ...

NASA’s Goldstone Solar System Radar is closely tracking asteroid 2024 PT5 during its nearest approach to Earth, a distance ...

Six planets will be visible together in a rare 'planet parade' starting Jan. 21 The stars and planets are really aligning in ...

Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that ...