Uranus orbits the sun tilted on its side. This planet is composed mainly of the gases helium, hydrogen and methane. Its bluish-green color is due to the presence of methane.Know More
Scientists believe that Uranus's tilt, which is approximately 98 degrees, was caused by a collision with an object that was possibly as large as the Earth.
Discovered in 1781 by William Herschel, Uranus has 27 known moons and 13 rings. Some of its bigger moons are Titania, Oberon, Miranda and Ariel. The minimum temperature of this planet can be as low as -224.2 degrees Celsius. Its revolution period is 84 Earth years.
Uranus is the only planet that has a name derived from a Greek god instead of a Roman deity. The Greek god's name was Ouranus.Learn More
The planet Mercury completes a single rotation in just under 176 days. Mercury was once thought to be tidally locked, and its rotation was not discovered until 1965.Full Answer >
Day and night occur because of the rotation of a planet around its axis. The hemisphere of the planet that faces the sun at a particular moment experiences daylight, while the opposite side experiences darkness. The Earth rotates counterclockwise from west to east.Full Answer >
While no specific date can be identified for the discovery of Mars, knowledge of the planet dates back to ancient civilizations. Ancient Romans, Egyptians and Chinese astronomers independently discovered and named the planet.Full Answer >
Looking at the first-ever records of Venus, the Babylonians have proof of the planet being observed around 1581 BC. The Persians also have a record of the transit of Venus in 1032.Full Answer >