Huge collections of stars in space containing anywhere form a few ...

[darbym82]

Huge collections of stars in space containing anywhere form a few hundred million to more than a trillion stars are referred to as
 
  A) island universes
  B) galaxy clusters
  C) star clusters
  D) galaxies

Question 2

Process of Science: Describe a piece of observational evidence supporting general relativity.
 
  What will be an ideal response?

[canderson530]

Answer to Question 1

A

Answer to Question 2

Study of Mercury's precession reveals that it precesses more slowly than Newtonian gravity would predict. It takes a general relativity-based approach, accounting for the curvature of spacetime, to correctly predict the precession rate. General Relativistic corrections to time have also been tested by synchronizing clocks that then are flown on airplanes and satellites.

[darbym82]

Thanks for the timely response, appreciate it

[billybob123]

Great answer, keep it coming