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ALMA sees the twisted birth of a binary star system

29 Oct 2019, 13:00 UTC
ALMA sees the twisted birth of a binary star system ALMA (ESO/NAOJ/NRAO), Alves et al.

Roughly half of all stars you see in the sky are actually part of a binary system, two stars (and sometimes more) orbiting each other. They look like one star by eye because, while the two stars are physically separated from each other by some billions of kilometers, they're also hundreds of trillions of kilometers from Earth, so from that distance they blend together into what looks like a single star.

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