Dr. Sky

The massive Andromeda Galaxy will be visible in the Arizona night skies this weekend, but you'll have to know where to look.

An unexpected sunspot group that grew to a massive size in just two days caused spectacular auroras and disrupted some radio communications on Earth.

With the coming close of summer and monsoon season, get ready for some amazing things in Arizona's September skies.

Earth will be grazed by the biggest near-Earth object to pass this close since asteroids were discovered on Friday morning.

With less than two weeks until the Great American Total Solar Eclipse, some reports have surfaced about people selling fake solar eclipse glasses.

It appears that 2017 is a year to remember, as many new asteroids are passing Earth at some very close distances!

A special Russian satellite -- which is the size of a loaf of bread -- called Mayak may become one of the brightest objects in the sky!

There is only about a month until the astronomical event of the century, the Great American Total Solar Eclipse, that will be viewed by millions.

Though the sunspot cycle was heading toward a low point, the largest sunspot group of this year was visible on the sun this week.

NASA will conduct its Double Asteroid Redirection Test in October 2022. If successful, it could be a step in protecting Earth from asteroids.