Statistics for Astronomy General Quiz (Pretty Hard)

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Hint	Answer	% Correct
Betelgeuse and Rigel are both in this constellation?	Orion	90%
Which star cluster "embodies" the seven daughters of Greek titan Atlas?	Pleiades/Seven Sisters	57%
Variable hypergiant with a radius equal to 1,700 solar radii, the largest known star in the universe.	UY Scuti	45%
Most common shape of astronomical orbits.	Elliptical	40%
Natural spherical asteroid "cloud" within which our solar system is theorised to exist, left over after the collapse of our own stellar nebula.	Oort	38%
Distance in light years between the sun and Proxima Centauri, the next nearest star.	4.2	26%
The name for the time taken for our solar system (sun) to orbit the Milky Way galaxy.	Galactic Year/Cosmic Year	24%
The name of the radius inside which a specified mass would form a black hole.	Schwarzschild	17%
The name of the orbital limit within which the tidal effects of a large body on a smaller body will begin to tear apart the latter.	Roche	10%
Pluto was the first of this type of object found in 1930.	Trans-Neptunian	10%
Wavelength of electromagnetic radiation emitted by hyperfine splitting of Hydrogen.	21cm	7%
Mean absolute temperature of the Cosmic Microwave Background.	2.7K	7%
Fastest ever man-made object and the first to officially "touch" the sun.	Parker Solar Probe	5%
The first quasar ever discovered.	3C273	2%
The most massive star ever discovered, found in the Tarantula Nebula, part of the Large Magellanic Cloud, with a mass of approximately 300 solar masses.	RMC 136a1/R136a1	2%