Sky This Week is brought to you in part by Celestron. Friday, November 7With a bright Moon still in the sky, we're a bit ...

The moon's orbit around the Earth isn't a perfect circle, so it gets nearer and farther as it swings around. A so-called ...

Jupiter's moon Io stands alone among the solar system's moons. It has more than 400 active volcanoes, and its surface is home ...