Across
- 3. A small piece of asteroid or a comet, could be smaller or larger, and often created from a collision.
- 8. Sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago.
- 10. any minor planet in the Solar System that orbits the Sun at a greater average distance than Neptune.
- 12. A celestial body that is in orbit around the Sun and has sufficient mass for its self-gravity to overcome rigid body forces so that it keeps a nearly round shape.
- 14. made of dust from the disintegrating nucleus on a comet.
- 15. The large round object that circles the Earth and that shines at night by reflecting light from the sun.
- 17. A dwarf planet in the asteroid belt between the orbits of Mars and Jupiter. It was the first asteroid discovered, on 1 January 1801, by Giuseppe Piazzi.
Down
- 1. The most visible part of a comet; encompasses the streams of dust and gas.
- 2. How many dwarf planets are there?
- 4. How many planets are there in our solar system?
- 5. Which objects lies mostly in a belt between Mars and Jupiter.
- 6. A celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
- 7. a small piece of matter that falls from space with great speed, producing a bright light as it enters the earth's atmosphere.
- 9. The largest asteroid known to date. Roughly as big as Alaska and rotates around the sun once every 1,678 Earth days.
- 11. What Dwarf planet is located in the Kuiper belt and used to be a regular planet.
- 13. Frozen leftovers from the formation of the solar system composed of dust, rock, and ices.
- 16. Located in the center of a comet, composed of rock, dust, ice, and frozen gases.