Astronomy Staff, Author at Astronomy.com

Is there ever a time that the Moon does not set or rise?

Telescopes and Equipment

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How is the total mass of the universe calculated?

Do dwarf galaxies have a large black hole in the center?

Dave Eicher steps into emeritus role at Astronomy magazine

Telescopes and Equipment

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As Earth’s axis precesses over 26,000 years, what bright stars become the North Star?

Before spacecraft, how did astronomers determine the mass, size, and composition of the giant planets?

Robotic Spaceflight, Solar System

Will Voyager 1 and Voyager 2 be damaged when they pass through the Oort Cloud?

Why are there so many different types of stars?

Telescopes and Equipment

Heat up your observing with these new products

Vote now: What are your top five revolutions in planetary science?