logoalt Hacker News

Black Holes or Black Hole Stars? Astronomers Spar over 'Little Red Dots'

75 pointsby jandrewrogersyesterday at 3:47 PM33 commentsview on HN

Comments

itsalwaysgoodtoday at 8:03 PM

Perhaps they are the elusive white hole: exit points of black holes.

Fuel for a Big Bang, if you can imagine. A universe within itself.

jahnutoday at 2:42 PM

One thing worth noting is our popular notion of what a star seems to be is quite different from what astronomers have.

One example, Canis Majoris has a radius of about 1420 solar radii. But its mass is roughly 17±8 times the mass of the Sun and therefore an average density of 5.33 to 8.38 mg/m3. “It is over 100.000 times less dense than Earth’s atmosphere at sea level.”

https://en.wikipedia.org/wiki/VY_Canis_Majoris

https://nineplanets.org/vy-canis-majoris/

show 7 replies
benji-yorktoday at 4:20 PM

Any decent human being would have called these Black Hole Suns.

show 2 replies
JumpCrisscrosstoday at 4:19 PM

Is there an experiment that could resolve this? Literally resolve these objects better, or otherwise distinguish between these hypotheses?

Is there anything behind these objects they could lens?

show 1 reply
ck2today at 4:20 PM

Dr. Becky take: https://www.youtube.com/watch?v=KuTVjuXu7uE

PBS Space Time: https://www.youtube.com/watch?v=FMdrD_jcYgE

love those channels

show 1 reply
debo_today at 2:11 PM

Soundgarden was apparently prophetic with their hit song "Black Hole Sun."