Stars and Galaxies

Front

What happens when a medium star's life ends?

Back

A medium star ends its life as a white dwarf.

Front

What determines the luminosity of stars?

Back

The luminosity of stars is determined by their mass (size).

Front

What is a nebula?

Back

A nebula is an immense cloud of dust and gas where stars are born.

Front

What is a supernova?

Back

A supernova is an enormous explosion that occurs when a massive star dies.

Front

What determines if a star becomes a giant or a supergiant?

Back

The size of the nebula determines if a star becomes a giant or a supergiant.

Front

What is a black hole?

Back

A black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is nuclear fusion?

Back

Nuclear fusion is the process by which two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What is a galaxy?

Back

A galaxy is a massive system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is the difference between a star and a planet?

Back

A star is a luminous celestial body made of plasma that generates energy through nuclear fusion, while a planet is a celestial body that orbits a star and does not produce its own light.

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages such as nebula, main sequence, red giant, and end stages like white dwarf, neutron star, or black hole.