At present there are around 540 extrasolar known planets. These are distant planets so not a lot is known about them, but there are some basic things that provide some basic information about them. It seems that the majority of them are planets that resemble Jupiter, being large and gaseous planets. It is very rare that a planet resembles Mars, in fact it is the rarest type of planets among the known planets so far. Even the planets that do share some characteristics with Mars, they also have characteristics that make them different, especially their size and distance from their star. Mars type of planets are very rare because of what Mars have actually become. The planet is assumed to have been similar to Earth, but its core has stopped its activity, resulting in no magnetism, and no volcanic activity. Also, the atmosphere of this planet is very thin, the temperatures vary greatly throughout the day, and its surface is covered with thick layers of dust and craters.
Many people believe that the temperature becomes lower in winters and higher in summers because the Earth is closer to the sun in summer and farther from the sun in winter. In fact, the Earth is farthest from the sun in July and is closest to the sun in January. The main reason behind these temperature changes in different seasons is because the earth's axis is tilted. It is all about the tilt of the Earth's axis.
Yes, the United States is a country. Yes, by states it means the 50 states that make up the United States. Florida, California, and Hawaii are all examples of states.<span />
