Friday, January 11, 2019

Astronomers spot real-life Tatooine

 The famous binary sunset on Tatooine, from the movie Star Wars (1977).

Researchers have spotted a super-Jupiter orbiting a star in a three-sun system 320 light-years from us. Preliminary data suggest that the gas giant - named HD 131399Ab - is about four times the mass of Jupiter and orbits the largest and brightest of the three stars (which has about 1.8 times the mass of our sun) once every 550 years or so. The other two suns in the system, smaller stars that orbit each other relatively tightly and quickly, lie somewhere between 45 billion and 60 billion kilometers away.

Measurements suggest that HD 131399Ab’s atmosphere contains water vapor and methane, and that the planet’s cloud tops are about 850°K (577°C). 

The movie Pitch Black (2000) actually features a multiple star system with three suns.

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