Space Vocabulary

5. The explosion of a star where the star may reach a intrinsic luminosity one billion times greater than the sun
6. All of space and time including planets, stars, galaxies, and all other forms of matter and energy
7. A spectrum of the electromagnetic radiation emitted by a source
8. Instrument for viewing distant objects, especially in space
10. An instrument for forming and examining spectra
14. The idea that the universe began as a single point, than expanded and is still growing today
17. Shows the relationship between a star's temperature and its luminosity
18. A part of space that has a gravitational field so intense that no matter or radiation can escape
21. A system of stars with gas and dust, held together by gravitational attraction
24. The interaction that causes attraction between all things that have mass
25. Very long period waves that move through the ocean because of forces caused by the moon and sun
26. a small very dense star that is formed when a star has exhausted its nuclear fuel

1. A measure of the total amount of light emitted by that object
2. A tide after a full or new moon, when there is the greatest difference between high and low water
3. A spacecraft with no people in it used to study planets and send information back to Earth
4. The force acting on the object due to gravity, how heavy an object is
9. A nuclear reaction where two or more atomic nuclei combine to form one or more different atomic nuclei and subatomic particles
11. The changes in frequency of any kind of sound or light wave exerted by a moving object
12. A unit of length used to express astronomical distances
13. An astronomical object comprising a luminous spheroid of plasma that is held together by self-gravity
15. A tide after the first or third quarters of the moon, when there is the least difference between high and low water
16. The galaxy that includes the Solar System
19. An object that moves around a larger object due to gravity
20. Quantity representing the amount of matter in a particle or object
22. An enormous cloud of dust and gas that acts like a nursery for new stars
23. The act of revolving around another object