Answer:
The correct answer is Brown Dwarfs.
Explanation:
- Brown Dwarfs are star-like objects that contain less than 0.08 solar masses and will never raise their core temperatures high enough that the proton-proton chain can begin.
- These brown Dwarfs are identified by M, L, T, and Y types.
- These are found in a space between low-mass M dwarf stars and the massive planets in which nuclear fusion never occurs.
Hence, the correct answer is Brown Dwarfs.