Astronomy

Everything that exists, including all energy, matter, and space.

• Astronomy

• Astrology

• Universe

• Solar System

The scientific study of what is beyond earth

• Astronomy

• Astrology

• Universe

• Solar System

A massive collection of gases, held together by its own gravity and emitting huge amounts of energy

• Sun

• Red Star

• Dwarf Star

• Star

A spinning motion of a planet about its axis.

• Orbit

• Rotation

• Revolution

• Satellite

A stellar explosion that occurs at the end of a massive star's life

• Protostar

• Red Giant

• Supernova

• Nebula

A star near the end of its life cycle with a mass that is equal or smaller than that of the sun; becomes larger and redder as it runs out of hydrogen fuel

• Protostar

• Red Giant

• Supernova

• Nebula

A STREAK OF LIGHT in the sky produced by the burning of a meteoroid in Earth's atmosphere

• asteroid

• meteorite

• meteor

• ‎meteoroids

The time of year when the hours of daylight equal the hours of darkness

• Aurora Borealis

• Constellation

• Equinox

• Precession

A large, round celestial object that travels around a star

• Universe

• Galaxy

• Constellation

• Planet

A celestial object that travels around a planet or dearth planet

• Satellite

• Celestial Object

• Meteor

• Asteroid