Across
- 3. the sixth planet from the sun and the second largest in our solar system.
- 4. an icy small celestial body that orbits the sun.
- 5. star any small relatively dim star or the dead remnant of a star.
- 7. bang theory the leading scientific explanation for the origin that nothing can escape.
- 9. years the total disaster a beam of light travels through a vacuum in one earth year.
- 10. the colossal , highly luminous explosion of a star.
Down
- 1. the fundamental building block of all matter in the universe.
- 2. a bowl shaped depression or cavity in a surface typically caused by a volcanic eruption.
- 6. dwarf the extremely dense cooling core left behind by a dying low to medium mass star.
- 8. hole a region in space where the pull of gravity is so intense that nothing can escape.