What is the oldest astronomical reading structure in Europe?
Newgrange
100
The Big Bang is thought to have happened this long ago..
13.7 billion years
100
These form from the collapse of nebulas
Stars
100
This is the smallest planet in our solar system
Mercury
100
This Greek thought that the stars and other planets rotated around the Earth
Aristotle
200
This structure was build around 2800 BC to mark the passage of the seasons
Stonehenge
200
The fact that light from distant galaxies appears to be red shifted indicates that
The universe is expanding
200
This process fuels our sun, releasing vast amounts of energy
Nuclear fusion
200
This is actually the hottest planet, due to the high level of carbon dioxide in its atmosphere
Venus
200
He is the father of modern astronomy
Copernicus
300
The ancient Chinese were the first to report sighting this familiar object
Halley's Comet
300
This finding established that galaxies that are further away from us are moving away at faster speeds
Hubble's Law
300
These types of stars have the most energy, and thus highest luminosity
Red giants
300
This is the largest planet
Jupiter
300
He was tried for heresy for stating that the Earth rotates around the sun
Galileo
400
These people reported the supernova explosion that gave rise to the Crab Nebula
The ancient Chinese
400
If the universe started out very hot and then expanded and cooled, this observation about the predicted temperature of space would confirm the Big Bang.
Cosmic background microwave radiation
400
When very large stars die, they produce these
Supernovas
400
This is the coldest planet, with observed temperatures of -236 degrees C
Neptune
400
His laws of motion helped explain the orbits of planets
Newton
500
This person's explanation of the orbit of the planets was accepted for 1500 years.
Ptolemy
500
This galaxy is our closest neighbor
Andromeda
500
Observations of X-ray burst near the center of our galaxy allowed scientists to observe these
Black Holes
500
This is the least dense planet, composed of mostly hydrogen and helium