Test #4 Objectives: 3

Question 1

5 Constellations?

Answer 1

Ursa Major, Cancer, Draco, Lynx, Gemini

Question 2

Why are supernovas essential to life?

Answer 2

Supernovas produce heavy elements when they blow up that are needed for life

Question 3

2 Methods showing building blocks for life

Answer 3

Amino acids and nucleotides

Question 4

3 Theories how life began on Earth

Answer 4

1. Evolution
2. Panspermia: life was spread by another planet (like and asteroid hitting Earth with life)
3. Garbage Theory: Ancient Aliens

Question 5

3 Astronomical criteria for life like out own

Answer 5

1. Star cant be in an unstable binary/multiple star system
2. Star cant be too hot, life is too short
3. Star cant be too cold, not in goldilocks zone

Question 6

Number of communicating civilizations?

Answer 6

1,000,000. Smallest possible is 1 according to Drake Equation

Question 7

Self replicating ships?

Answer 7

Robots are sent out to report data to us, and then build new ships while out so it continues to replicate

Question 8

4 reasons why 21 cm radiation a good interstellar communication?

Answer 8

1. Cheap
2. Penetrates dust
3. Low noise
4. We studied wavelengths similar already

Question 9

Number of galaxies in the universe?

Answer 9

125 billion