Jupiter
Fifth planet from the sun.
Solar System
A set that includes a star and all of the matter that orbits it, including planets, moons, asteroids, comets, and other objects.
Dwarf Planet
Objects that are round and orbit the sun, just like planets do. But unlike planets, dwarf planets are not able to clear their path around the sun.
Asteroid
Rocks floating around in outer space
Magnetic Field
The space around a magnet where the magnetic force is active. Earth has a magnetic field and its extension into space helps protect us from space weather.
Universe
All of space and time, and everything in it
Saturn
The sixth planet from the sun- it has rings!
Uranus
Seventh planet from the sun.
Satellite
An object that orbits another object. A moon is actually a satellite. We also say satellite to refer to spacecraft people build that orbit Earth, other planets,
Mars
The fourth planet from the sun.
Telescope
a usually tubular optical instrument for viewing distant objects by means of the refraction of light rays through a lens.
Meteor
The streak of light caused when a meteoroid enters a planet’s atmosphere and starts to burn from the heat of friction.
Spacecraft
A vehicle used for traveling in space.
Earth
The third planet from the sun (hey, you live there!)
Constellation
A group of stars in the sky. They're often named after an animal, object, or person
Neptune
Eighth planet from the sun.
X-Rays
Radiation with lots of energy made by very hot gases, stars, neutron stars, and gas around black holes.
Atmosphere
The gasses held by gravity around Earth and around other planets
Mercury
The closest planet to the sun.
Venus
Second planet from the sun.
Galaxy
A collection of thousands to billions of stars held together by gravity. The galaxy we live in is called the Milky Way.
Supernova
The explosion of a star that makes it as bright as a whole galaxy.
Gravity
A force that pulls matter together.