Rotation of Earth With Respect to Center of the Galaxy?
Most recent answer: 03/19/2013
- Nicola (age 32)
Grontardo (cr) italy
The Earth is pretty far out from the center of the galaxy which is in the constellation . There is evidence that there is a big black hole there, named . The rotation rate for our position in the Milky Way is about once per 200 million years.
As you can imagine, the galaxy is not a solid disk so rotational rates can vary as a function of distance to the center. Observation and analysis of this phenomenon has provided evidence that there is a component of mass within the galaxy called dark matter. It is a current hot topic in the astro-physics community. Take a look at for an interesting discussion.
(published on 03/19/2013)
Follow-Up #1: missing links
- Iain (age 30)
We were having problems with some sort of cyber attacks, and had to do some protective filtering of the site. In the process, unfortuantely many good url's were lost, seriously affecting the quality of many answers. You noticed one of them.
(published on 08/25/2017)