Mars is 142 million miles from the Sun and takes 687 Earth days to complete one orbit around the sun, according to the National Aeronautics and Space Administration. The average surface temperature on Mars is -81 degrees Fahrenheit, and the small red planet has a much weaker gravitational pull than that of Earth. Mars also has 15 percent of the volume of Earth.
According to Cornell University’s Mission to Mars, Mars is the fourth planet from the Sun in the solar system at 141.5 million miles away, just after Earth. A day on Mars is equivalent to 24 hours and almost 40 minutes, close to the 24 hours that make an Earth day. The wind on the planet is incredibly strong throughout the day, spiking up to 80 miles per hour. Weather on the planet exists in extremes, with extremely low and extremely high temperatures dependent upon the location on the planet.
Mars creates fascination for scientists because it is a former earth-like planet, according to Cornell University’s Mission to Mars. The inhospitable red planet has a history of flowing water, blue skies and a heavy atmosphere possible for containing life, explains Discovery. The Vallis Marineris on the Martian surface is longer than any valley on Earth.Learn More
The shape of Earth's orbit is an ellipse, which resembles a stretched circle. Earth's orbit lies on the plane of the ecliptic, an imaginary plane in which the sun and the planets move. Earth revolves around the sun in a period of 365 days.Full Answer >
According to NASA, none of the planets in the solar system are known to have exactly four moons. It is noted that Jupiter has four large moons, known as the Galilean Satellites, but the gas giant might have up to 46 additional smaller moons.Full Answer >
According to NASA, Jupiter's moon, Ganymede, is the largest moon in the solar system. It has a diameter of 2,631 kilometers. Ganymede is larger than both Pluto and Mercury and is 3/4 the size of Mars. Unlike many other moons, Ganymede has a core that generates a substantial magnetic field.Full Answer >
Mars makes a complete rotation on its axis every 24 hours and 37 minutes. The length of a day on Mars is only 39 minutes and 35 seconds longer than the length of a day on Earth.Full Answer >