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Solving the Mystery of Stardust Recycling
When middleweight stars near the end of their cosmic lives, they shrug off their outer layers, shedding up to...
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Dinosaurs From Space! Or Not
From the Smithsonian’s Dinosaur Tracking blog: Somewhere, out in the interstellar void, there may be a planet inhabited by hyper-advanced dinosaurs....
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Humans vs. Robots: Who Should Dominate Space Exploration?
Many space scientists, engineers and politicians argue that virtually anything a human can do on another planet, a robot...
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Sun’s Sibling Stars Could Host Cousins of Earth Life
Some scientists are searching not just for any life out there in the universe, but for our distant relatives....
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At the End of the Earth, Seeking Clues to the Universe
The same conditions that make the Atacama, Earth’s driest desert, so inhospitable make it beguiling for astronomy. In northern...
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Closing in on the Black Hole at Center of Our Galaxy
Though scientists have suspected for a while that a giant black hole lurks at the center of our galaxy,...
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New Data Support Einstein on Accelerating Universe
Galaxy measurements indicate dark energy, not flaw in relativity, to blame for cosmic repulsion
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Strange Gamma-Ray Objects in Deep Space Perplex Scientists
The universe is filled with high-energy radiation, much of which is made of gamma rays belched out by strange...
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Survey Gets a Grip on Dark Energy
Astronomers have measured the precise distance to over a quarter of a million galaxies to gain new insights into...
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Life’s Building Blocks Grow Close to Home
Though life is a complicated brew, some of its ingredients can be plucked from Earth’s backyard instead of being...