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quarta-feira, 12 de novembro de 2014

NASA WEB · Astronomers completed the largest and most sensitive visible-light imaging survey of dusty debris disks around other stars. These disks, likely created by collisions between leftover objects from planet formation, were imaged around stars as young as 10 million years old and as mature as more than 1 billion years old.

Astronomers completed the largest and most sensitive visible-light imaging survey of dusty debris disks around other stars. These disks, likely created by collisions between leftover objects from planet formation, were imaged around stars as young as 10 million years old and as mature as more than 1 billion years old.

Once thought to be simply pancake-like structures, the unexpected diversity and complexity of these dusty debris structures strongly suggest they are being gravitationally affected by unseen planets orbiting the star. The researchers discovered that no two "disks" of material surrounding stars look the same. 

Foto: Astronomers completed the largest and most sensitive visible-light imaging survey of dusty debris disks around other stars. These disks, likely created by collisions between leftover objects from planet formation, were imaged around stars as young as 10 million years old and as mature as more than 1 billion years old.  Once thought to be simply pancake-like structures, the unexpected diversity and complexity of these dusty debris structures strongly suggest they are being gravitationally affected by unseen planets orbiting the star. The researchers discovered that no two "disks" of material surrounding stars look the same.  More here: http://buff.ly/1z3BFti

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