THE SOLAR SYSTEM. SPACE. Mercury. THE. PLANETS. Earth. Venus. Mars. Jupiter. Suturn. Neptune. Uranus. Pluto. Mercury.
The Earth, which is located three planets from the Sun, is the only planet in the universe known to support any kind of life. The Earth is estimated to be approximately 4.57 billion years old. The moon followed not long after. The Earth rotates around its own north to south axis once every 23 hours, 56 minutes and 4.091 seconds (one day), and around the Sun once every 365.2564 days (one year).
Named after the Roman god of war, the planet Mars is located four planets from the Sun. Commonly referred to as “The Red Planet,” Mars tends to give off a reddish hue when viewed from Earth. This is believed to be caused by an abundance of iron oxide on the planet’s surface. Mars is about half the size of the Earth.
Jupiter is the largest planet within our solar system, located five planets from the Sun. Jupiter has a total radius of nearly 70,000 kilometers, which is second only to that of the Sun’s 696,000 kilometer radius. Jupiter’s overall size is 318 times greater than that of the Earth. Jupiter is 2.5 times larger than all of the other planets in the solar system combined. It takes this massive planet a whopping 4,333 days to orbit the Sun one full time!
The mysteriously tilted planet of Uranus is one of the 4 gas giants, or planets whose gas composes the majority of its mass. The planet Uranus is the seventh from the sun. Its 51,117km diameter classifies it as the third largest planet in the solar system. By mass, Uranus is the fourth largest.
The icy, enigmatic planet of Pluto is the ninth and furthest planet from our sun. The planet Pluto is also the smallest in our solar system; it is even smaller than many of the moons that orbit other planets.
While attempting to locate the cause of Neptune’s orbital interruption, Clyde W. Tombaugh discovered Pluto on February 18, 1930. While mistaken to believe that Pluto was the planet causing the disturbance, Tombaugh was correct about its presence.
When the Moon is not in its new phase, it can be seen on clear days or nights from anywhere on the surface of Earth if you know when to look. The Moon is the Earth’s only natural satellite, and has never been given any other scientific name. The Moon is about 384,403 kilometers from Earth, and has an approximate diameter of 3,476 km. The Moon is actually believed to be slowly moving farther away from Earth, at a rate of about 4cm per year!