Question 1

True or false: The supermassive black hole at the center of the Milky Way is actually quite dim and quiet.

Accepted Answer

True. Sgr A* is a dormant black hole with very low accretion, making it surprisingly dim compared to others—it’s like a sleeping giant.

Question 2

True or false: Sagittarius A* weighs roughly the same as 4 million Suns combined.

Accepted Answer

True. Measurements of star orbits give Sgr A* a mass of about 4.1 million solar masses, making it a supermassive black hole.

Question 3

True or false: Sagittarius A* is located in the exact geometric center of the Milky Way’s visible disk.

Accepted Answer

False. It’s near the center, but the galactic bulge and dust obscure it. The true center is defined by the black hole’s position, not a perfect geometric point.

Question 4

True or false: Sagittarius A* is so massive that its gravitational pull affects the entire Milky Way galaxy.

Accepted Answer

False. Sgr A* has only about 4 million solar masses. The galaxy’s total mass is hundreds of billions of suns, so its gravity dominates only nearby stars.

Question 5

True or false: Stars near Sagittarius A* can orbit it at speeds faster than 5,000 miles per second.

Accepted Answer

True. The star S0-2 orbits Sgr A* at roughly 5,000 km/s (over 3,000 mi/s), confirming general relativity and the black hole’s immense mass.

Question 6

True or false: Sagittarius A* is the only black hole that has been directly photographed by humanity.

Accepted Answer

False. The first image of a black hole was of M87* in 2019. Sagittarius A* was imaged later, in 2022, by the Event Horizon Telescope.

Question 7

True or false: Gas clouds near Sagittarius A* sometimes get stretched into long, thin strands like spaghetti.

Accepted Answer

True. A gas cloud called G2 was observed being tidally stretched by Sgr A*’s gravity in 2014, a process astronomers call spaghettification.

Question 8

True or false: If you fell into Sagittarius A*, you would be instantly crushed before crossing the event horizon.

Accepted Answer

False. For a supermassive black hole like Sgr A*, tidal forces at the event horizon are weak. You could cross it without being spaghettified—death comes later.

Black Hole Sagittarius A* Trivia Questions