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
The solar system was formed from a massive gas cloud, and layouts were observed and refined beginning in the sixth century B.C.E. by early Greek astronomers. Nicholas Copernicus and Galileo Galilei continued observing the solar system well into the Renaissance era, according to About.com.Full Answer >
Jupiter is the largest planet in the solar system. It is approximately 1,120 percent larger than planet Earth and has an estimated radius of 43,441 miles.Full Answer >
To make a model of the solar system, hang circles representing the planets from a larger circle of cardboard. By varying the length of the string and hanging the cardboard planets in orbital circles, the model is even more precise.Full Answer >
The next planetary alignment in the solar system will occur in 2854. While the planets will not ever be aligned in a straight line, they will reach their closest possible proximity that year.Full Answer >