Universe

3. The point in the orbit of a planet, asteroid, or comet at which it is closest to the sun
5. hole: A region in space where the gravitational pull towards a massive object is so strong that nothing, not even light, can escape from it
6. A sudden, intense brightening of a star
9. A faint constellation representing a river in Greek mythology
10. The process by which a star converts hydrogen into helium, releasing energy
12. Red Spot: A large, rotating storm system on a planet, typically Jupiter or Saturn

1. A celestial event where the moon passes directly between the sun and Earth, casting a shadow on Earth
2. A group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure
4. A star system that consists of two stars orbiting around their common center of mass
7. A small, dim constellation named after a mythical creature with a snake-like body and a lion-like head
8. The point in the sky directly above an observer
11. A large cloud of gas and dust in interstellar space