Vocab
a dense Earth sized stellar remnant left after a star like the sun dies
what is a white dwarf
a powerful explosion that occurs when a white dwarf exceeds its mass limit
what is a type la supernova
white dwarfs produce energy through nuclear fusion
what is false
the closest and brightest white dwarf to earth
what is Sirius B
the approximate size of a white dwarf compared to a planet
what is earth-sized?
the final stage of a star after the red giant phase
what is stellar evolution
a region of extremely curved spacetime where gravity is so strong not even light can escape
what is a black hole
white dwarfs cool over billions of years
what is true
the star that Sirius B orbits
what is Sirius A
the weight of a teaspoon of white dwarf material
what is about 5-15 tons?
a cloud of gas ejected by a dying star before becoming a white dwarf
what is planetary nebula
a supernova that occurs when a massive stars core collapse under gravity
what is a type 2 supernova
all white dwarfs have hydrogen atmosphere
the first white dwarf ever discovered
what is 40 eridani B
surface gravity compared to earth
what is about 350,000 times stronger
a white dwarf that has cooled and no longer emits significant heat or light
what is a black dwarf
a dense object formed from the collapsed core of a massive star after a core collapse supernova
what is a neutron star
black dwarfs currently exist in the universe
what is false
a white dwarf known for having two different sides
what is Janus
the maximum mass limit for a white dwarf
what is about 1.4 solar masses
Supersonic shock front of high-pressure, compressed air expanding rapidly outward from an explosion.
what is black wave
the speed an object must reach to break free from gravitational field
what is escape velocity
white dwarfs can cause explosions in binary systems
what is true
what our Sun will become in about 5 billion years
what is a white dwarf
the percentage of milky way stars that will become white dwarfs
what is about 97%