While Mars appears to be quiet now, we know that something caused massive volcanoes to form and erupt in the past. Olympus Mons is the largest volcano ever discovered in the solar system. The volcano is comparable to the size of Arizona, measuring 374 miles (602 km) across. It's 16 miles (25 kilometres) tall, or three times the height of Mount Everest, the world's tallest mountain.
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Diamonds can fall from the sky on other planets.
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The moon formed as a consequence of cosmic debris colliding with Earth.
The full moon of each month has its own name.
China is the only country to have landed on the moon's dark side.
Every year, the moon travels away from the Earth by roughly 3.8 cm.
More humanity may be buried on the moon in the future.
NASA is planning to establish a base camp on the moon.
Did you Know? We may have previously had contact with aliens.
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Did you Know? Pluto was first discovered by a young research assistant in 1930
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Did you Know? There are floating hills on Pluto
Jupiter moon lo has towering volcanic eruptions.
Uranus is tilted towards its side.
Did you Know? Mars has the longest valley
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Did you Know? Jupiter's Great Red Spot is actually a planetary-sized storm that has been raging on for centuries
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