Free Fun Space Science Trivia Questions


Which planet has the most moons?
A: Jupiter has the most of any planet. Saturn is second.

Which planet is the hottest?
A:  Venus is the hottest planet.

Which planet is the coldest?
A: Pluto is the coldest planet. It has an icy temperature of -400 F.

How much would 100 pounds here on earth weigh on the moon?
A: If you weighed 100 pounds on earth, you would weigh only about 16 pounds on the moon.

What is Titan's atmosphere made of?
A: The atmosphere of Titan is made mostly of Nitrogen (80-90%), just like the Earth's atmosphere!

What is the diameter of the earth?
A: The diameter of the earth at the equator is 7,926.41 miles (12,756.32 kilometers).

What is the diameter of the moon?
A: The diameter of the Moon is 3,474 kilometers.

How fast is the speed of light?
A: In metric units, the speed of light is exactly 299,792,458 meters per second (or 1,079,252,848.8 km/h). Approximately 186,000 miles per second.

How many miles is one light year?
A: A light year is 5,865,696,000,000 miles.

What is a meteorite made of?
A: Most meteorites contain at least some iron metal (actually an alloy of iron and nickel). You can see the metal shining on a broken surface. Iron meteorites are all metal, stony iron meteorites are about half metal, half stone, and stone meteorites contain small flecks of metal.

How long is an astronomical unit?
A: The Astronomical Unit is the average distance between the Sun and Earth. Its value is 149,597,870 km (about 93 million miles).

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