Yet I also read in the last few years that they have decided that there are powerful black holes at the center of most galaxies. Waiting patiently by the mailbox for my Nobel in physics, I remain . . . It sticks to the black hole.
Parking spots are already too hard to find.
The mass of the universe is usually expressed as W , the fraction of critical mass. There are a couple of ways to measure the mass of the universe. The second method is to measure the velocities of stars in spiral galaxies and calculate how much mass is required to create the gravity that causes those motions. This measurement shows that there is a lot of non-shining matter, called dark matter. Dark matter is a hot topic of research.