This May Be the First Planet Found Orbiting 3 Stars at Once
The New York Times
It’s called a circumtriple planet, and evidence that one exists suggests that planet formation is less unusual than once believed.
GW Ori is a star system 1,300 light years from Earth in the constellation of Orion. It is surrounded by a huge disk of dust and gas, a common feature of young star systems that are forming planets. But fascinatingly, it is a system with not one star, but three.
As if that were not intriguing enough, GW Ori’s disk is split in two, almost like Saturn’s rings if they had a massive gap in between. And to make it even more bizarre, the outer ring is tilted at about 38 degrees.
Scientists have been trying to explain what is going on there. Some hypothesized that the gap in the disk could be the result of one or more planets forming in the system. If so, this would be the first known planet that orbits three stars at once, also known as a circumtriple planet.
