Mars occupies the fourth closest position to the sun in the solar system. Earth, along with Venus and Mercury, are all closer. Mars is bordered by both Earth and Jupiter.Know More
Mars is a much smaller planet than Earth, but one of the most similar in the solar system. It is the most explored planet so far, with multiple probes landing on and searching the planet.
Mars is one of the few planets that contains water (in the form of ice), and may be suitable for sustaining life. It is easily identified by its red appearance, which is a result of the high concentration of iron oxide on the planet's surface.Learn more about Planets
Mercury is the smallest planet in our solar system; Jupiter is the largest.Pluto was once considered to be the smallest planet, but since Pluto is no longer thought to be a planet, Mercury now takes the title.Full Answer >
Galileo Galilei was the first person to observe physical details about the bodies in the solar system and define their relationships to one another. Galileo is credited with vastly improving the design of the telescope, allowing him to make more nuanced observations about the solar system.Full Answer >
Jupiter is the heaviest planet in the solar system, with a mass of 1.90 x 10^27 kg. The gas giant's mass is equivalent to about 318 Earths. Jupiter is so heavy that it's twice as heavy as all the planets in the solar system combined.Full Answer >
Jupiter is the largest planet in the solar system, with a radius of 43,441 miles. That is more than 10 times Earth's 3,359-mile radius, but it is also about 16 times smaller than the Sun's radius. Mercury is the smallest planet in the solar system with a radius of 1,516 miles.Full Answer >