Across
- 4. Hycean planets mare mostly made up of
- 6. The apparatus that is launched into space to look at space is called a space _______
- 7. that suggests the presence of life or living things
- 8. These planets can reach temperature os 200 _______Celsius
- 10. Very small lifeforms are know as ________ lifeforms
- 11. NASA stands for national American space ______
Down
- 1. Hycean planets are ______-rich
- 2. A planet that bears all of the living conditions needed to live is in the __________ zone
- 3. Carbon is a gas that is ____________ for life
- 5. A person who studies celestial objects, space, and the physical universe as a whole are know as
- 9. The finding of something is known as the _________ of something
