The visible parts of galaxies contribute about one-tenth of the critical density of the universe.
Indicate whether the statement is true or false
Question 2
In M82, observations indicate that there are several bright sources close to the center of the galaxy. These might be
A) supernovae.
B) accretion disks of supermassive black holes, millions of times as massive as our sun.
C) accretion disks of intermediate black holes, hundreds of times as massive as our sun.
D) accretion disks of stellar mass black holes.
E) red giants in the process of forming planetary nebulae.
The four interacting parts of eukaryotic cells.
Interacting and Colliding Galaxies
Observable Universe
How to choose the correct u and dv when you integrate by parts
A Critical Thinking Guide and Checklist
Parts of a Plant