Universe Components 1.2 Flashcards
Star
A sphere of plasma that emits light and other radiation
Planet
An astronomical object orbiting a star that is large enough to be rounded by gravity
Moon
An astronomical object that orbits a planet
Asteroid
An astronomical body orbiting star that doesn’t have enough gravity become rounded it is an irregular shape
Comet
An astronomical object with an elliptical orbit around to start releasing gas as a nearest star
Meteor
Any astronomical object that enters a planets atmosphere
Meteorite
A small astronomical object to reach is a planet surface and impacts
Solar system
The collection of astronomical bodies in orbit around a star
Galaxy
A Astronomical collection of stars and nebulae held together by gravity
Nebula
Any collection of astronomical gases and small debris or dust
Quasar
Extremely bright core of the galaxy containing a black hole and the electromagnetic radiation it emits
Pulsar
Star that emits dual beams of radiation in short bursts
Black hole
An astronomical space that is such high gravity no light can escape
Terrestrial planets
Mercury Venus Earth and Mars. Composed mostly of rock.
Gas giants
Jupiter Saturn Uranus and Neptune. composed mostly of gas