Infrared image from NASA's WISE satellite showing a field of stars and galaxies in the constellation Lyra. The image highlights WISE 1828+2650, the coldest known brown dwarf, circled in green. This "failed star" is only about 40 light-years away and has a temperature similar to a warm room.

Astronomy Picture from 30/08/2011

The Coldest Brown Dwarf

Source: https://apod.nasa.gov/apod/ap110830.html


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