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The Universe’s Oldest Stars Likely Lit Up Way Later Than Once Thought
Data gathered by the European Space Agency’s Planck telescope indicates that the universe was dark for about 550 million years after the big bang
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Top Space Pictures of the Week, From a Hubble Icon to Hungry Black Holes
Ghostly pillars, a dark nebula and a galaxy herd starred in some of the best image-driven stories released at a recent astronomy meeting
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What Is the Universe? Real Physics Has Some Mind-Bending Answers
Science says the universe could be a hologram, a computer program, a black hole or a bubble—and there are ways to check
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From the Editor
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Why Carl Sagan is Truly Irreplaceable
No one will ever match his talent as the “gatekeeper of scientific credibility”
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What Astronomers Are Still Discovering About the Big Bang Theory
A half-century after it was confirmed, the theory still yields new secrets
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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
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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
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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?
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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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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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