Astromony Flashcards
(20 cards)
Ptolemy
Believed that Earth was the center of the universe and the planets and sun revolved around the Earth.
Copernicus
Believed that the sun is the center if the universe and all planets revolved around the sun.
Brahe, Tycho
Recorded very precise observations of the planets and stars.
Kepler, Johannes
Used Brahe’s work to determine that all the planets revolve around the sun in elliptical orbits.
Galileo
Used a telescope to make important discoveries about the moon and sun.
Newton, Isaac
Discovered that all objects in the universe attract each other through gravitational force.
Hubble, Edwin
Proved that other galaxies exist beyond the Milky way.
Ursa major
A constellation in the northern sky.
Ursa minor
A constellation in the northern sky also known as the little dipper.
Orion
A visible constellation in the night sky that is very visible.
Canis major
A constellation in the Southern hemisphere also known as the greater dog.
Cassiopeia
A constellation in the northern sky that looks like a M or W.
Red Giant
A very large star that has low surface temperature.
White dwarf
The stellar core left behind after a dying star.
Main-sequence star
A star that fuses hydrogen into the core.
Supernova
A super big explosive star.
Black Hole
A place in space that gravity pulls.
Parallax
The displacement in direction.
Light-year
The distance the light travels in one year.
Polaris
The brightest star in the Ursa Minor.
