[10] Astrophysics

Question 1

What does Astrophysics focus on?

Answer 1

The application of physics to the study of celestial objects and phenomena outside Earth’s atmosphere

Question 2

List the main topics of study in Astrophysics

Answer 2

• Life cycle of stars
• Black holes
• Galaxies
• Cosmic microwave background radiation

Question 3

What is the life cycle of stars in Astrophysics?

Answer 3

It is the sequence of stages a star undergoes from birth to its end, including nebula, main sequence, red giant, and either a supernova, neutron star, or black hole

Question 4

What are black holes in Astrophysics?

Answer 4

They are regions in space where gravity is so strong that nothing, not even light, can escape from them

Question 5

What are galaxies in Astrophysics?

Answer 5

They are vast, gravitationally-bound systems consisting of stars, stellar remnants, gas, dust, and dark matter

Question 6

What is cosmic microwave background radiation in Astrophysics?

Answer 6

It is the thermal radiation left over from the time of recombination in Big Bang cosmology