Big Bang
Astroids
Stars
Random
100
When the universe gets bigger and bigger over time, it is doing this.
expanding
100
Because they are much smaller than planets, most asteroids have this kind of lumpy shape.
irregular astroid
100
What is the main sequence?
The long stage where a star spends most of its life, steadily fusing hydrogen into helium.
100
Who was the main character in One Piece
luffy
200
The two most common and lightest elements created in the first few minutes after the Big Bang.
hydrogen and helium
200
The glowing streak of light we see in the night sky when a space rock burns up in the atmosphere.
shooting star
200
Stars are born inside these huge clouds of gas and dust in space.
Nebula
200
What is rotation
The period of time it takes a planet to complete one full spin on its own axis, which gives us the length of its day.
300
This is the tiny, infinitely hot and dense point from which the entire universe began to expand.
singularity
300
The vast, doughnut-shaped region between Mars and Jupiter where most asteroids are found.
Asteroid Belt
300
This is the official scientific name of the star at the center of our solar system.
Sun
300
How are tides formed
The gravitational pull of the Moon is the primary cause of these regular rises and falls of ocean water on Earth.
400
The approximate number of billions of years ago that the Big Bang is estimated to have occurred
13.8 billion
400
This is the official term for a piece of space rock that hits the Earth's surface and survives the fall.
meteorite
400
This process happens in a star's core, where two lighter atoms combine to form a heavier atom, releasing huge amounts of energy.
Nuclear Fusion
400
What is the name of the anime where a kid has yellow hair and wants to be hokage
Naruto
500
This is the process where the first atomic nuclei (like hydrogen and helium) were formed in the first few minutes after the Big Bang.
nucleosynthesis
500
The resistance that causes a meteoroid to heat up and glow as it enters Earth's atmosphere.
friction
500
An extremely dense, rapidly spinning object left behind after a supernova that isn't massive enough to form a black hole.
Nuetron Star
500
What is an Astronomical Unit?
The average distance from the Earth to the Sun, a unit often abbreviated as AU.