What is the word that describes the concept that all objects orbit earth?

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Based on the image below what would an observer on the nighttime side of earth observe?