Very Big Stuff
everything that exists
What is the universe?
the Sun and everything held by its gravity
What is the solar system?
the four inner planets
What are Mercury, Venus, Earth, and Mars?
the theory about how the universe began
What is the Big Bang Theory?
a glowing sphere of gases
What is a star?
billions of stars held together by gravity
What is a galaxy?
where the frozen objects hang out past Neptune's orbit
What is the Kuiper belt?
the four outer planets
What are Jupiter, Saturn, Uranus, and Neptune?
number of years since the universe started
What is 13.7 billion years?
a cloud of gas and dust where stars form
What is a nebula?
the galaxy in which our Sun resides
What is the Milky Way Galaxy?
so dense light can't escape from this star leftover
What is a black hole?
the planet that is tipped on its side
What is Uranus?
scientist who discovered that the universe is expanding
Who is Hubble?
a stellar explosion
What is a supernova?
a misshapen galaxy
What is an irregular galaxy?
this reaction powers a star
What is nuclear fusion? (or fusing hydrogen into helium)
the planet with the shortest year
What is Mercury?
the galaxies the farthest away from us are doing this
What is moving away faster?
our Sun is this type
What is a yellow dwarf star?
a galaxy with "arms" and lots of gas and dust
What is a spiral galaxy?
a unit that is the distance from the Sun to the Earth
What is an astronomical unit?
the gas that makes Uranus and Neptune appear blue
What is Methane?
evidence for the Big Bang Theory
What is galaxies moving away, CMBR, or ratio of hydrogen and helium in the universe?
our Sun in 5 billion years as it runs out of fuel
What is a red giant?