Astronomers

Using shadows and the moon, Olson determined the moment Ansel Adams photographed Autumn Moon. When conditions recurred 57 years later, Olson was ready.

Forensic Astronomer Solves Fine Arts Puzzles

Astrophysicist Don Olson breaks down the barriers between science and art by analyzing literature and paintings from the past

Sarah Zielinski (left) is an assistant editor at Smithsonian magazine and Jennifer Drapkin (right) is a senior editor at Mental Floss magazine.

Jennifer Drapkin and Sarah Zielinski on “Celestial Sleuth”

Galileo

Galileo, Reconsidered

The first biography of Galileo Galilei resurfaces and offers a new theory as to why the astronomer was put on trial

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Signs of Life

Astrophysicist Lisa Kaltenegger analyzes light from distant stars for evidence we're not alone

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Maria Zuber

On the surprise evidence of flowing water on Mars

Prague's astronomical clock has marked time since the 15th century. Legend holds that local officials ordered the maker of this famous timepiece blinded to prevent him from duplicating his great achievement elsewhere.

Time for a Change

One professor's mission to revise the calendar

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An Interview with Rob Irion, Author of "The Planet Hunters"

Rob Irion spoke with Amy Crawford about his article, "The Planet Hunters"

35 Who Made a Difference: John Dobson

Come one, come all. Share the sky with the father of sidewalk astronomy

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