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universe

From the Editor

From the Editor

Why Carl Sagan is Truly Irreplaceable

No one will ever match his talent as the “gatekeeper of scientific credibility”

An artist's rendition of the Big Bang.

What Astronomers Are Still Discovering About the Big Bang Theory

A half-century after it was confirmed, the theory still yields new secrets

The Andromeda Galaxy

Think Big

What Does the Future of the Universe Hold?

The collision of our galaxy with the Andromeda galaxy is billions of years away, but it’s never too early to wonder what will happen

A selection of a new image of distant galaxies in the COSMOS field. Click to see the whole view.

Picture of the Week: A Deep View of the Universe

A new survey of a slice of the distant reaches of the universe reveals 200,000 galaxies

What bits of the universe are legal to own?

A Quick Guide to Owning the Universe

If someone tries to sell you the Brooklyn Bridge, you know it’s a hoax. But what about a meteorite, moon or star?

Investigators with the Sloan Digital Sky Survey have created the biggest 3-D map of the distant universe ever made.

A 3-D Map of the Universe, No Glasses Required

Investigators at the Sloan Digital Sky Survey track changes in the sky and some of the universe’s great mysteries

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Neutron Star May Have Superfluid at Its Core

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More Stars in the Universe

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Stars on the Move

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Picture of the Week: The Witch Head Nebula

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Where Is the Center of the Universe?

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Felicia Day Explains Colliding Galaxies

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Spitzer Telescope Spots Cosmic Destruction

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It’s in the Air: Skin, Stardust, Radio Waves, Vitamins, Spider Legs

We seldom notice air, but there’s more going on in that cubic foot of the ether in front of our faces than most of us would ever guess

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