One
What colour is Pluto?
Pink.
Really. And it has a heart on it.
Really. And it has a heart on it.
Two
Uranus. William Herschell, the astronomer, was trying to win favour from King George III.
Gangrene in his leg.
Three
Which planet's orbit helped usher in the adoption of the general theory of relativity?
Mercury
Four
Which was the first black hole to be imaged from Earth?
Messier 87
Five
What is the second closest star to Earth?
Proxima Centauri, aka Alpha Centauri C, approximately 4.22 light years away.
Six
Which asteroid, the largest in the asteroid belt, used to be considered a planet?
Ceres
Seven
What astronomical bodies are assigned "LGM" catalog numbers?
Pulsars, which are rapidly rotating neutron stars. At first, the natural radio pulses were thought to be artificial, and the "LGM designation came about because the astronomers wondered if they were seeing "little green men".
Eight
When a sufficiently large star runs out of hydrogen to power its fusion, it becomes a red giant and fuses which element instead?
Hydrogen
Nine
Which star, also known as the North Star, is particularly useful in navigation?
Polaris
Ten
Which astronomical body is formed of a thick, hard crust containing a single, massive atomic nucleus?
A neutron star. Said nucleus has no protons, and is a degenerate neutron gas.
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