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Resolving the Planetesimal Belt around HR8799

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Planets develop from the dusty placental disk of material that surrounds a star after it begins to shine. The dust in that disk, according to most models, starts to stick to itself until ...

Chiral Molecules in Space

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Chiral molecules are those that have a "handedness," that is, they take one of two forms, identical in chemical composition but with mirror image shapes - like our right and left hands: ...

Is Earthly Life Premature from a Cosmic Perspective?

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Cambridge, MA - The universe is 13.8 billion years old, while our planet formed just 4.5 billion years ago. Some scientists think this time gap means that life on other planets could b...

The Aligned Spin of a Black Hole

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A black hole in traditional theory is characterized by having "no hair," that is, it is so simple that it can be completely described by just three parameters, its mass, its spin, and its...

Orphaned Protostars

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Stars form as gravity contracts the gas and dust in an interstellar cloud until clumps develop that are dense enough to coalesce into stars. Precisely how this happens, however, is very u...

Eternal Light, up for Grabs

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The Outer Space Treaty bars any nation — and by extension, corporation — from owning property on a celestial body, but a loophole in the pact may amount to the same thing, warns a Harvard...

Using X-rays to Map an Asteroid

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NASA's OSIRIS-REx spacecraft will launch September 2016 and travel to the near-Earth asteroid Bennu to harvest a sample of surface material and return it to Earth for study. But before th...
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