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zalisa [80]
3 years ago
14

1. light is the fastest-known entity in our universe.

Biology
2 answers:
stepan [7]3 years ago
8 0
1.True 2.True 3.N/A 4.N/A 5.B
Len [333]3 years ago
8 0

1. light is the fastest-known entity in our universe. - true

2. There are fewer than one billion stars in the galaxy.  -true

3. hydrogen atoms do NOT repel each other within a star.  - true

4. sky maps show celestial spheres, including constellations - false

5. which of h following happens during the main-sequence stage of a star's life? - B) It changes the color that it emits.




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