Science Vocab S2
__1. black holeA. the distance light travels in one year
__2. constellationsB. gigantic explosion near the end of the life of some stars
__3. galaxyC. cloud of gas and dust in which new stars form
__4. light-yearD. point with such strong gravity that nothing nearby escapes
__5. nebulaE. huge system of stars, dust and gas held together by gravity
__6. supernovaF. group of stars that forms a pattern
__7. axisA. the Sun and all planets, moons, asteroids,etc. that orbit it
__8. cometB. one full orbit of an object around another object
__9. revolutionC. frozen mass of ice and dust orbiting the Sun
__10. solar systemD. imaginary center line around which the Earth rotates
__11. space probeE. spacecraft that gathers data without a probe
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