Alien Planet
One alien planet travels around its Sun in four days and this planet, quicker then any other, is out side of the solar system. Its Sun is round about the same size of ours. The planet is called a large Jupiter because its much bigger than Jupiter and its the same shape. It goes in a very strange orbit round its Sun, it goes in an egg shape. So the temperature gets really, really hot and it's very, very cold. Its got some very strong winds like 1500 KM per hour. It seems a round orbit is very rare because lots of planets have an egg shaped one.
It is very hard to spot a planet out side of the solar system so scientists look for Suns because if planets orbit the Sun, the Sun will go round it centre of gravity. If it doesn't have any planets going round it the Sun will, smoothly go a long in space.