‘Astrophysicists have found a star-like object with a surface temperature just one tenth that of the Sun.
The cold object is known as a brown dwarf: a “failed” star that never achieved the mass required to begin nuclear fusion reactions in its core.
This one – called J0034-00 – is thought to have a surface temperature of just 600-700 Kelvin (up to 430C/800F).
It is the coldest solitary brown dwarf ever seen, according to the British team that discovered it.
This find further tests the boundary between high-mass gas planets and the smallest brown dwarfs. ‘