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The Hubble is off line! Oh no! SkyGuy tells you what went wrong, and what's next.

Spiral galaxies are beautiful. But why are they shaped like that? The answer will surprise you. Plus, SkyGuy introduces the other kinds of galaxies out there.

Ever tried to count all the stars in the sky? Ever wondered how many there really are? Well, you probably won’t believe it but here is the answer!

June 20th was the summer solstice for people in the northern hemisphere. But what, exactly, is a solstice?

August 11th and 12th mark the peak of the Perseid meteor shower. But what is a meteor shower and what causes it? SkyGuy explains…

It sure seems like the sun goes around the earth. In fact, for thousands and thousands of years, that is exactly what people thought. SkyGuy answers this question from Mina, who is five years old.

Comets and shooting stars are very different beasts. But what exactly are they? SkyGuy gives the answer…

Galaxies are huge!. They contain at least 100 billion stars each. But how many galaxies are there? SkyGuy tries to give an accurate number!