Answer:
Brown Dwarf
Explanation:
Brown dwarf can be simply defined as those that are found in space and these are much larger in size, having a mass of about 13 times more than that of the planet Jupiter.
These are so large and have so high mass that they are not considered to be planets, and also they are not classified as stars as the process of nuclear fusion reaction does not takes place at its core.
So, these brown dwarfs are generally described as ‘almost, but not quite a star’.
