The Boomerang Nebula is about 5,000 light-years from Earth

///@go_atomico: 👉 The Boomerang Nebula is about 5,000 light-years from Earth in the direction of the Southern constellation Centaurus. Measurements show the nebula has a temperature of only one degree Kelvin above absolute zero (nearly -460 degrees Fahrenheit).The Boomerang Nebula is so cold due to the rapid expansion of gas in the nebula, which cools it down to near-absolute zero temperatures. This rapid expansion is believed to be caused by a smaller companion star that plunged into the heart of a larger red giant. This event caused most of the red giant’s matter to be ejected as an ultra-cold outflow of gas and dust. This outflow is expanding 10 times faster than it would in a single star, plunging the nebula into temperatures of just 1 degree Kelvin. This makes the Boomerang Nebula colder than the cosmic microwave background, the ‘afterglow’ of the Big Bang, and the natural background temperature of empty space.