Close Stellar Encounters
lopsided debris disk around a young star known as HD 15115.
Using the Hubble Space Telescope and W. M. Keck Observatory astronomers have found a lopsided debris disk around a young star known as HD 15115.As seen from Earth, the edge-on disk resembles a needle sticking out from the star.
Astronomers think the disk's odd imbalanced look is caused by dust following a highly elliptical orbit about the star. The lopsided disk may have been caused by the gravity of planets sweeping up debris in the disk or by the gravity of a nearby star.
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