How much of the solar system's mass is in the Sun?
The Sun contains about 99.8% of all the mass in our solar system.
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- When was the first image of a black hole taken?
“The first image of a black hole, in the galaxy M87, was released in 2019.”
Reference: Event Horizon Telescope
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What is Hawking radiation?
Stephen Hawking predicted that black holes slowly give off energy, now called Hawking radiation.
Who discovered the four largest moons of Jupiter?
Italian scientist Galileo Galilei discovered Jupiter's four largest moons in 1610 using a telescope he improved himself.