Stars and Galaxies

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

How many stars are in our Solar System?

Back

There is 1 star in our Solar System, which is the Sun.

Front

What does the H-R Diagram represent?

Back

The H-R Diagram plots the surface temperature of stars against their brightness.

Front

What can a star's core collapse into after a supernova?

Back

After a supernova, the core can collapse into a neutron star or a black hole if massive enough.

Front

What do all galaxies have in common?

Back

All galaxies have stars, gas, and dust.

Front

What is a black hole?

Back

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

Front

What is a neutron star?

Back

A neutron star is the remnants of a supernova explosion, composed mostly of neutrons.

Front

What is the difference between a white dwarf and a black dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low-mass star, while a black dwarf is a theoretical stellar remnant that has cooled sufficiently that it no longer emits significant heat or light.

Front

What is cosmic background radiation?

Back

Cosmic background radiation is the afterglow radiation from the Big Bang, filling the universe.

Front

What is the Doppler Effect?

Back

The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.