Terms
What is an Astronomical unit?
The distance between centers of the Earth and the Sun
In 1543, who was the first person to challenge the Geocentric Theory?
Nicolaus Copernicus
What is a singularity?
The center of a black hole
What is the closest galaxy to the Milky Way?
Andromeda Galaxy
What is Galileo Galilei's nationality?
Italian
A small collection of galaxies
Who invented the spectroscope in 1818?
Joseph Fraunhofer
What are the densest objects in the universe?
Neutron stars
Where is the Kuiper belt?
Far beyond the orbit of Neptune
What is the heaviest element a star can fuse up to?
Iron (Fe)
What is the kind of galaxy that is a flat disc, but has no spiral arms?
Lenticular galaxy
In 1781, who discovered the first planet using telescope?
William Herschel
What is the difference between a meteor and a meteorite?
A meteor is a meteoroid that hits Earth's atmosphere and burns up. A meteorite is a meteoroid that survived the trip.
Which Planet has a moon named Ganymede?
Jupiter
The Big Dipper is a constellation within a bigger constellation called?
Ursa Major
What is the lowest point in an orbit?
Periapsis
In 1929, which astronomer first described the redshift phenomenon and tied it to an expanding universe?
Edwin Hubble
What are clouds of dust and gas where new stars are born?
Nebulaes
In 1846, what planet was discovered based on the strange orbit of another planet?
Neptune
What do you call the action of using another celestial body to accelerate an orbit?
Slingshot manuever
Describe the Doppler effect.
The change in frequency in what you hear when a source and observer are moving with respect to each other, eg. redshift
In 1930, the Dwarf planet, Pluto, was discovered. Who discovered Pluto?
Clyde Tombaugh
What is the name of the Black Hole at the center of the Milky Way?
Sagittarius A*
What is the classification of our Sun?
G2V
When was the Theory of Relativity published?
1931