Vocabulary One!

Blog Vocabulary

1. Astronomical Unit- average distance between Earth to Sun
2. Astronomy- study of all matter and energy
3. Big Bang- theoretical beginning of evolution for universe
4. Black Hole- escape velocity exceeds speed of light
5. Ecliptic- path of sun by Earth's orbit
6. Electromagnetic Spectrum- traveling energy in a vacuum
7. Galaxy- how matter organizes in a universe
8. Gravity- force of attraction between two bodies
9. Hydrogen- most abundant element in the universe
10. Light Year- distance light travels in one year
11. Mass- amount of matter in an object
12. Meridian- imaginary circle dividing direction and zenith
13. Oscillating Universe- universe regenerating constantly by Big Bang
14. Planet- large enough object to clear debris
15. Precession- Earth's axis conical wobbling
16. Quantum Mechanics- physics of smallest parts of atoms
17. Revolution- orbit of one body around another
18. Rotation- body's motion spinning around its axis
19. Solar System- family of bodies orbiting around sun
20. Speed of Light- distance of electromagnetic radiation versus time
21. Stellar System- star surrounded by other bodies in orbit
22. Star- body converts matter into energy luminously
23. String Theory- theory where universe is energy strands