water		A system of stars that have more then one sun and include binary stars is called a _____.
NuclearFusion		Because of the Doppler Effect, as a star moves _____from us it's spectra is shifted towards the blue.
speedoflight		What process happens in the core of a star?
away		Because of the Doppler Effect, as a star moves _____ from us it's spectra is shifted towards the red.
quasar		What size of star is our sun?
towards		Infared,visable, radio, ultra-violet, and x-ray are all different kinds of what?
telescopes		186,000 miles per second is what?
redshifts		If the universe will eventually collapse on itself, it will be called a _____.
closeduniverse		One peice of evidence for the Big Bang is that we see mostly red shifts.
hydrogenandhelium		A space cloud of many gases moving throughout space where stars form is called a _____.
medium		Between 13 and 15 billion years ago, all matter and energy were together. Then something happened that caused them to expand and move away from each other. What was this called?
waterandoxygen		The Big Bang is responsibe for most of the ______in the atmosphere.
Nebula		A starlike object that sends out radio waves, and are 12 billion lightyears away (this means that we can see into the past) are called what?
constellation		What evidence is there that life may exist on mars?
multiplestarsystem		What are two things that earth needs inhabit life?
TheBigBang		If the universe will expand forever, it will be called a _____.
openuniverse		A group of stars that really aren't close together is a_____.