An online observatory will webcast a free celestial marathon on Saturday (Oct. 20) to mark Astronomy Day, telling the story of our universe with the help of live shots from professional-quality ...

Things to see: The moon is a great place to start, Wellington said. You can monitor its phases throughout the month. Skywatchers can also track planets, like Saturn and Jupiter, moving across the sky.

A Parade of Planets. Beginning in late February, seven planets will align in the night sky. But Uranus and Neptune may require a telescope to see.