science quiz Flashcards
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