Astronomy

3. a planet not orbiting our Sun.
4. rocky planets
7. a comet tail containing dust that reflects sunlight
10. former planet
11. a small rocky object orbiting the sun
13. a region between the orbits of Mars and Jupiter
15. the outflow of low-density, hot gas from the Sun’s upper atmosphere.
16. one of the numerous small, solid bodies that, when accreted together, form a planet.
18. onsisting of a tiny, icy core and a tail of gas and dust.
19. the Sun, planets, their moons, and other bodies that orbit the Sun.
21. the addition of matter to a body
22. the passage of a celestial body across the face of a larger body.
23. a stream of ionized particles evaporated from a comet
24. a meteorite lacking chondrules

1. a meteorite containing small spherical grains called chondrules.
2. the conversion of ultraviolet light into visible light.
5. the point in the sky from which meteors in showers appear to come.
6. Gaseous planets
8. the plume of gas and dust from a comet.
9. the gaseous atmosphere surrounding the head of a comet.
12. small, solid bodies moving within the Solar System.
14. a category of exoplanet with a radius about 1.25 to 2 times Earth’s radius.
17. the solid remains of a meteor that falls to Earth.
19. center of our solar sytem
20. a cloud of gas and dust in between the stars.