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Which planet is the closest to the Sun and has a day that is longer than its year?
Mercury
Which planet is covered by thick clouds and spins backwards, making its day extremely long?
Venus
Which gas planet is famous for its beautiful rings and has 274 known moons?
Saturn
Which planet is called the Red Planet because of its rusty-colored soil?
Mars
Which planet is made mostly of gas, rotates in only 10 hours, and has the shortest day of all the planets?
Which rocky planet has huge volcanoes, deep canyons, and a day very similar to Earth’s?
Mars
Which solid and rocky planet takes 225 Earth days to travel around the Sun?
Venus
Which planet has land, liquid water, and a rotation of 24 hours that gives us day and night?
Earth
Which planet takes 165 Earth years to travel around the Sun and has visible storms on its deep blue surface?
Neptune
Which planet is the only one we know of that supports life?
Earth
Which icy gas planet rotates on its side, causing extreme seasons?
Uranus
Which icy gas planet has the strongest winds in the solar system?
Neptune
Which planet appears blue-green because of methane in its atmosphere?
Uranus
Why are black holes a mystery in outer space?
Because they are invisible, and their gravity is so strong that nothing, not even light, can escape, making them hard to study.
How is a black hole different from an ordinary hole?
A black hole is a region in space with extremely strong gravity. An ordinary hole is just an empty space in a surface.
What process leads to the formation of a black hole?
When a very massive star runs out of fuel, it collapses under its own gravity, forming a black hole.
Which small, solid, and rocky planet has a surface full of craters?
Mercury
Which planet has a moon called Titan, which is larger than the planet Mercury?
Saturn
Which planet has a giant storm called the Great Red Spot that has been raging for hundreds of years?
Jupiter
Who were some of the scientists involved in the discovery or naming of black holes?
John Michell and Pierre-Simon Laplace suggested the idea early on, and later scientists like Albert Einstein and Karl Schwarzschild helped explain them.