Space Crossword Eleanor Armitage

4. A gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation.
6. Our sun is this type of star.
7. Our galaxy is this shape.
9. The attraction between objects of different masses and distances.
11. Cosmic snowballs of frozen gases, rock, and dust that orbit the Sun.
13. The angle between the Earth at one time of year, and the Earth six months later, as measured from a nearby star.
14. A streak of light in the sky caused by a meteoroid crashing through Earth's atmosphere.
15. Stars that are close together and are primarily made of neutrons.
16. The range of all types of EM radiation.
21. When a star explodes.
23. How much space an object takes up.
24. A cloud of gas and dust that will create a new star.
25. Forms after a star has run out of hydrogen fuel for nuclear fusion, and has begun the process of dying.

1. This is a larger black hole.
2. A rotating neutron star that emits pulses of radiation.
3. Small, rocky objects that orbit the Sun.
5. The brightness measured by an observer at a specific distance from the object.
8. The measure of the brightness of stars if they were all exactly 32.6 light years from Earth.
10. Used to find the what a star is based on the luminosity and temperature.
12. Newton's first law.
17. A group of stars that are named after a myth or an object.
18. One in which two stars orbit around a common centre of mass, that is they are gravitationally bound to each other.
19. Light and matter cannot escape this.
20. The brightest star in the night sky. called also Dog Star.
22. Two light nuclei merge to form a single heavier nucleus.