Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

Sky gazers across the U.S. will have a chance to see an extraordinary celestial event on Friday as all of the planets in our solar system will appear in the evening sky. This phenomenon known as a ...

It's prom season -- for the planets. Every couple of years, give or take, planets get together in the night sky in such a way that they seem to be aligned with each other. They seem to be, really -- ...

Arizona skywatchers, grab your binoculars and look to the western horizon because this week’s parade of planets is serving up a celestial spectacle. Seven planets — Mercury, Mars, Jupiter, Uranus, ...