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ikenbot: ‘Impossible’ Stars Found in Super-Close Orbital Dances Image: This artist’s impression shows two active stars — M4-type red dwarfs — that orbit each other every 2.5 hours, as they continue to spiral inwards. Eventually they will coalesce into a single star. Credit: J. Pinfield, for the RoPACS network Four pairs of what astronomers are calling “impossible stars” — stellar twins in orbits so close they defy explanation — have been found in our Milky Way galaxy, scientists say. Astronomers using the United Kingdom Infrared Telescope (UKIRT) in Hawaii discovered the four star pairs, each of which is a binary system in which two stars circle each other in less than four hours. Until now, scientists thought that such twin-star setups couldn’t exist. Our sun does not orbit another star, but roughly half of the stars in our Milky Way galaxy do, as part of a binary system. These binary stars likely formed close together, and have been orbiting one another since their birth, the researchers said.

ikenbot:

‘Impossible’ Stars Found in Super-Close Orbital Dances

Image: This artist’s impression shows two active stars — M4-type red dwarfs — that orbit each other every 2.5 hours, as they continue to spiral inwards. Eventually they will coalesce into a single star. Credit: J. Pinfield, for the RoPACS network

Four pairs of what astronomers are calling “impossible stars” — stellar twins in orbits so close they defy explanation — have been found in our Milky Way galaxy, scientists say.

Astronomers using the United Kingdom Infrared Telescope (UKIRT) in Hawaii discovered the four star pairs, each of which is a binary system in which two stars circle each other in less than four hours. Until now, scientists thought that such twin-star setups couldn’t exist.

Our sun does not orbit another star, but roughly half of the stars in our Milky Way galaxy do, as part of a binary system. These binary stars likely formed close together, and have been orbiting one another since their birth, the researchers said.

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