100 cards with Astronomy lessons or terms in them English
The system of eight planets and various other objects moving around the sun
A small rocky body orbiting the sun
A celestial object that flies around the sun, composed of a nucleus of ice and dust.
A large system of millions or billions of stars, together with gas and dust
The study of celestial bodies in the universe beyond the Earth's atmosphere
A cloud of gas and dust in space
The galaxy that contains our solar system
A place in space where gravity pulls so much that even light cannot get out
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The system of eight planets and various other objects moving around the sun
Solar System
A small rocky body orbiting the sun
Asteroid
A celestial object that flies around the sun, composed of a nucleus of ice and dust.
Comet
A large system of millions or billions of stars, together with gas and dust
Galaxy
The study of celestial bodies in the universe beyond the Earth's atmosphere
Astronomy
A cloud of gas and dust in space
Nebula
The galaxy that contains our solar system
Milky Way
A place in space where gravity pulls so much that even light cannot get out
Black Hole
Small bodies of matter in the solar system that can fall on earth
Meteoroids
The extremely bright center of a distant galaxy, powered by a black hole
Quasar
A group of stars forming a recognizable pattern
Constellation
An optical instrument designed to make distant objects appear nearer
Telescope
A theory that suggests the universe began as a hot, dense point around 13.7 billion years ago
Big Bang Theory
The distance that light travels in one year
Light Year
A large, bright star with a cool surface, usually late in its life
Red Giant
Any object in space that orbits around another object
Satellite
A stellar explosion that often briefly outshines an entire galaxy
Supernova
The curved path of a celestial object around a star, planet, or moon
Orbit
Highly magnetized rotating neutron star which emits beams of electromagnetic radiation
Pulsar
Place for presenting educational shows about astronomy and the night sky
Planetarium
A unit of length used in astronomy, equal to about 3.26 light years
Parsec
Theoretical passage through space-time that could create shortcuts for long journeys across the universe
Wormhole
A brief eruption of intense high-energy radiation from the sun's surface
Solar Flare
Star showing a sudden large increase in brightness and then slowly returning to its original state
Nova
A small very dense star that is typically the size of a planet
White Dwarf
An event where one celestial body obscures light from or to another
Eclipse
A group of stars moving together through space
Star Cluster
Ripples in the curvature of spacetime that propagate as waves
Gravitational Waves
Natural light display in the Earth's sky, predominantly seen in the polar regions
Aurora
A small galaxy that travels on orbits around larger galaxies
Satellite Galaxy
Type of matter hypothesized in astronomy to account for effects seen in space that can't be attributed to normal matter
Dark Matter
A planet that orbits a star outside the solar system
Exoplanet
The second planet from the sun in our solar system
Venus
The largest planet in the solar system and the fifth one from the sun
Jupiter
A shift in the spectral lines of celestial objects towards longer-wavelength (red) end
Red Shift
A device for producing and observing a spectrum of light or radiation
Spectroscope
A person who is trained to travel in a spacecraft
Astronaut
The planet seventh in order from the sun
Uranus
The eighth and farthest known planet away from the sun in the solar system
Neptune
A dwarf planet and the ninth-largest and tenth-most-massive known object directly orbiting the sun
Pluto
Branch of astronomy that deals with the physics of the universe
Astrophysics
The natural satellite of the Earth, visible as a white orb in the sky
Moon
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