Stars

1.  A prominent group of stars, but smaller then a constellation .

2.  Vega is seen as a white star

3.  Stars range in size from red giants to blue super giants to smaller white, yellow and orange stars

4.  A constellation is a region of a few stars, within a galaxy.  A galaxy is a huge rotating collection of gas, dust, (millions) of stars as well as planets, and other celestial objects.

5.  The universe was created by a big bang which occurred about 13 billion years ago.  After the big bang, all matter was scattered into what can be thought if as fine dust or a cloud of mist which was sub atomic particles.  After the bug bang the universe expanded rapidly.  As the universe free older the objects got increasingly further apart.  Eventually, electons, proteins and neutrons were created.  These then came together to form the smallest atom (the hydrogen atom).  When enough hydrogen atoms came together, stars were formed.  These giant stars became nuclear reactors in which smaller hydrogen atoms were cooked and fused together under enormous pressure to become heavier elements.