Stars, Galaxies, and the Universe

Front

Which star has the lowest luminosity?

Back

D

Front

Which star is considered a Main Sequence Star?

Back

A

Front

What process takes place inside a star to generate energy? Options: Nuclear fission, Hydrogen Creation, Nuclear fusion, Helium forming

Back

Nuclear fusion

Front

What do the initial moments after the Big Bang have in common with the universe as it exists now?

Back

the universe began expanding then, and it is still expanding today

Front

Which of these puts the main parts of an average star's life cycle in the correct order?
Options: protostar>
main sequence>
red giant >
white dwarf, protostar> 
main sequence> 
white dwarf> 
red giant, main sequence> 
protostar> 
white dwarf> 
red giant, protostar> 
red giant >
main sequence> 
white dwarf

Back

protostar>
main sequence>
red giant >
white dwarf

Front

A star at the stage in its life cycle when it stops fusing hydrogen, begins fusing helium, and expands to a large, low-density star. What stage in the life cycle does this describe?

Back

Red Giant or Red Supergiant

Front

Who discovered that the galaxies were moving away from one another?

Back

Edwin Hubble

Front

Which piece of evidence supports the Big Bang theory?

Back

The more distant galaxies are moving the quickest.

Front

If it takes 8.9 years for light produced on Carinae V602 to reach the sun, how far is Star X from the sun if Star X is 30 times as far from the sun as Carinae V602?

Back

267

Front

Which type of star is the hottest according to the Hertzsprung-Russell diagram?

Back

Blue main sequence