A black dwarf is the final stage of a star as big as the sun, the white dwarf burning with heat supply had run out of fuel, then later the star goes out becoming invisible, the one in the photo is a brown dwarf a brown dwarf half between a star and a planet so emits heat but is so weak as to be dark, I think
the universe is made to be explored, but no one will ever visit it all
What these users have said exactly. Black dwarves are just extremely old White dwarves, which are way more massive than any Brown Dwarf.
Living among the stars, I find my way. I grow in strength through knowledge of the space I occupy, until I become the ruler of my own interstellar empire of sorts. Though The world was made for the day, I was made for the night, and thus, the universe itself is within my destiny.
Brown dwarfs do emit light, it's just in the infrared, not visible.
Same for black dwarfs, but as others have noted, brown dwarfs and black dwarfs are totally different objects -- different compositions, mass, and formation process. There are no black dwarfs in SE because the universe is not old enough for them to exist yet. It takes a long time for white dwarfs to cool down!
If this was a black dwarf, there would be visible gravitational lensing, since they are just cooled white dwarfs.
In the distant future, when black dwarf exist, novice space travelers may mistake them for black holes, since they will be completely dark and have some lensing. Experienced travelers would be less likely to make the mistake, since they know that black holes produce more intense gravitational lensing.