Education:
Source: ScientificAmerican.com
1)earth rotates 23 hours, 56 minutes and 4.09053 seconds
2)circumference is approximately 40,075 kilometers
3)460 meters per second, approx. 1,000 miles per hour, At equator.
4)Earth whirls around the center of our galaxy at some 220 kilometers per second, or 490,000 miles per hour.
5)A similar galaxy will have stars whirling around at a similar speed.
6)From earth one could see start that are approaching at 980,000 miles per hour or going away at 980,000 miles per hour. (or any number from 0 to +/- 980,000)
7)It appears our galaxy is approaching the "Great Attractor" at 1,000 kilometers per second.
Earth rotation 460 meter/sec. Galaxy rotation causes differential speed of stars to be in the order of 440,000 meters/sec. Galaxy to galaxy differential speed (depends on which galaxy) is on the order of 1,000,000 meters/sec. Could be as low as 0 and as high as 299,792,458 meters/sec. The earth rotation is a very small percent of the total speed.
The earth is moving toward the constellation Leo (the Lion) at 390,000 meters per second.