deck_14206980 Flashcards
(28 cards)
define astronomy
The scientific study of space
define universe
Everything that exists, including all energy matter and space
define Celestial object
Any object that exists in space
Define Satellite
A celestial object that travels around a planet or dwarf planet
Define Orbit
The closed path of a celestial object or satellite as it travels around another celestial object
Define Luminous
Luminous means something that emits light or glows
Define Galaxy
A huge rotating collection of gas, dust and billions of stars, planets and celestial objects
Define Solar system
The sun and all the objects that revolve around it
Part of the sun that nuclear fusion occurs in
Core
Energy travels from the core to these layers overtime
Radiation Zone
Together with radiative zone
Convection Zone
The suns surface where light can escape
Photosphere
Extends millions of km into space
Corona
Cooler areas on the suns surface that shows up as dark spots
Sun spots
Loops of Plasma created by the suns magnetic field
prominence
Explosions that throw plasma into space
Solar Flare
Define Astronomical Unit
Distance from the Earth to the sun
Define Light Year
How far light travels in 1 year
Describe Terrestrial planet
A rocky planet with a solid surface and thin atmosphere
Define Gas Giant
A gas giant is a huge planet made mostly of gases like hydrogen and helium
Define Dwarf Planet
A dwarf planet is a small planet-like object in space
Define Asteroid
An asteroid is a small, rocky object in space that orbits the sun
Define Meteoroid
A meteoroid is a small rock or particle in space
Define Meteor
A meteor is a bright streak of light in the sky
