Star Birth
A giant cloud of gas and dust where stars form.
Nebula
The long band across the H-R diagram where stars spend most of their lives.
The Main Sequence
The giant explosion at the end of a massive star’s life
Supernova
What our sun will swell into when its core runs low on hydrogen.
Red giant
The two main elements the Big Bang made.
Hydrogen and Helium
The force that pulls the cloud together to make a star.
Gravity
Which is hotter, a blue star or a red star?
A blue star
A massive star’s core fuses elements up to this one, then it can’t go any further.
Iron
The glowing shell of gas a dying sun-like star pushes off into space.
Planetary Nebula
The carbon and oxygen in your body were made by fusion inside of these
Main sequence stars fuse this element into helium
The hottest stars are on this side of the H-R diagram: left or right?
The left
A tiny, super dense leftover core made almost all of neutrons.
A neutron star
The small, hot core a sun-like star leaves behind when it dies
White dwarf
Gold is heavier than iron. Where was it made?
Supernovas
(also will accept neutron star collisions)
A star with the sun’s mass and a star with 15 times the sun’s mass are born together. Which one lives longer?
The one with the sun’s mass
Hot but dim stars in the bottom left corner of the H-R diagram.
White dwarfs
The leftover of the very biggest stars, so dense that not even light can escape.
A black hole
Yes or no: will our sun ever explode as a supernova?
No, it isn't massive enough
A spinning neutron star whose beams sweep past Earth over and over, like a spinning lighthouse
A pulsar