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Mars appears red because its surface is covered in iron oxide, commonly known as rust.
Jupiter is a gas giant so massive that over 1,300 Earths could fit inside it.
Mercury is the closest planet to the Sun, completing an orbit in just 88 Earth days.
While other gas giants have rings, Saturn's are the most spectacular and visible from Earth.
Venus has a runaway greenhouse effect, making it hotter than Mercury despite being further from the Sun.
Uranus has an axial tilt of 98 degrees, likely due to a massive collision in its past.
Earth has only one natural satellite, simply known as "The Moon".
Venus is the brightest object in the sky after the Sun and Moon, often visible at dawn or dusk.
The Great Red Spot is a giant anticyclonic storm on Jupiter that has raged for hundreds of years.
Saturn is the second largest planet, famous for its low density—it would float in a bathtub!