The __________ makes it possible for a massive star that has already exploded as a type II supernova to still be observed as a supergiant in Earth's night sky.
A. Hubble law.
B. early inflation of the universe.
C. expansion of space.
D. finite speed of light
Answer:D
The __________ makes it possible for a massive star that has already exploded as a type II supernova to still be observed as a supergiant in Earth's night sky.
A. Hubble law. B. early inflation of the universe. C. expansion of space. D. finite speed of light