Which 1939 model describes collapse of a uniform dust sphere into a black hole?
Answer
Oppenheimer-Snyder model
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Which 1939 model describes collapse of a uniform dust sphere into a black hole?
Answer
Oppenheimer-Snyder model
Which Italian gravitational-wave detector joined LIGO in observing GW170814?
Answer
Virgo
On what date was the GW150914 black-hole merger signal detected?
Answer
September 14, 2015
About how many solar masses was the final black hole formed in GW150914?
Answer
62
Which 1970-launched X-ray astronomy satellite observed Cygnus X-1?
Answer
Uhuru
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Latest trivia questions
On what date was the GW150914 black-hole merger signal detected?
Answer
September 14, 2015
What event occurs when a star is torn apart by a black hole's tidal forces?
Answer
Tidal disruption event
What radius gives the event horizon size of a non-rotating black hole?
Answer
Schwarzschild radius
What glowing disk of orbiting gas can surround a feeding black hole?
Answer
Accretion disk
Which 2009-launched ESA telescope studies black holes at far-infrared wavelengths?
Answer
Herschel Space Observatory