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Carl Sagan - Astrophysics and Extraterrestrial Life

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Carl Sagan - Astrophysics and Extraterrestrial Life

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Questions and Answers

What is the process of creating new atomic nuclei called?

Nucleosynthesis (correct)

Triple alpha process

Proton-proton chain

Nuclear fusion

Which of the following is a giant cloud of dust and gas in space?

Red giant

Protostar

Nebula (correct)

Main sequence star

What type of star is the Sun?

Red giant

Main sequence star (correct)

Planetary nebula

Protostar

What is the final stage in a low-mass star's life called?

Planetary nebula Signup and view all the answers

Which process allows stars to fuse heavier elements like carbon and oxygen?

Triple alpha process Signup and view all the answers

What is the first element formed after the Big Bang?

Hydrogen Signup and view all the answers

What is the main factor that determines the path and fate of a star?

Its mass Signup and view all the answers

What process allows stars to release enough outward energy to counter the inward force of gravity?

Nuclear fusion Signup and view all the answers

What is the famous equation mentioned in the text that relates mass and energy?

E = mc² Signup and view all the answers

What is the primary reaction that powers stars in their cores?

Conversion of hydrogen into helium Signup and view all the answers

What is the process in which two light nuclei merge to form a single heavier nucleus?

Nuclear fusion Signup and view all the answers

Which of the following factors is NOT mentioned in the text as influencing the lifetime and eventual fate of a star?

The star's distance from other stars Signup and view all the answers