Caption: Relative sizes of the Sun and Jupiter and estimated relative sizes of red dwarf star Gliese 229A and brown dwarfs Gliese 229B and Teide 1 (which was the first verified brown dwarf (1995)).

UNDER RECONSTRUCTION BELOW but it will probably never fixed now

Some of this baryonic dark matter may be in the form of brown dwarfs (star-like objects too small to burn hydrogen), dim white dwarfs, dim neutron stars, and black holes. For examples of brown dwarfs, see the figure below.

But perhaps NOT much of it. The idea that MACHOs (Massive Compact Halo Objects) (brown dwarfs, dim white dwarfs, dim neutron stars, and black holes) may make up a lot of the baryonic dark matter is at present disfavored.

Re-analysis of the MACHO data suggests there may be few or almost no MACHOs (e.g., Evans, N. W. & Belokurov V. 2004, astro-ph/0411222, RIP: The MACHO Era [1974--2004]). But the issue is very controversial right now.

Credit/Permission: User:Bryan Derksen, 2007 / Public domain.
Image link: Wikipedia: File:Relative_star_sizes.svg.
Local file: local link: brown_dwarf.html.
File: Brown dwarf file: brown_dwarf_comparison_dated.html.