Scientists found the first planet-like object in 2002, but it’s unknown how they came into being. Theories suggest they were kicked out of orbit or created by collapsing dust and gas. CFBDSIR2149 is one of the closest known free-floating planets. Jupiter rotates the fastest, Mercury’s craters may contain ice, and Uranus has 21-year seasonal cycles.
It was believed that all planets orbit a star, but scientists found the first of dozens of planet-like objects in 2002 in the constellation Orion. It is not known how these planets came into being. Scientists theorize that the objects may have been orbiting stars, but were kicked out of orbit for some reason. Another theory is that planets may have been created by collapsing clouds of dust and gas. In 2012, a free-floating planet named CFBDSIR2149 was discovered less than 160 light-years from Earth, making it one of the closest known planets of its type.
Read more about the planets:
Jupiter is the largest planet in Earth’s solar system, with a mass that is about 300 times Earth’s mass, but it takes only 10 hours to rotate on its Jupiter axis, the fastest speed of any planet in the solar system.
Although Mercury is one of the hottest planets in Earth’s solar system because it’s closest to the sun, scientists believe some of its craters may actually contain ice.
Uranus takes 84 years to orbit the sun, meaning that its seasonal cycles each last 21 years.
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