Because of the tilt, parts of Earth are either closer to or farther from the sun at certain times of the year. These times are our seasons. During winters at the North and South Poles, the nights last much longer than they do anywhere else on the planet. A winter night in the polar regions lasts all winter long. Summertime at the Poles is one very long day.
Earth has many kinds of climates.
It gets that hot in some deserts. There may be some places on Earth where people may not be able to live. But some form of life is possible almost anywhere on Earth. The moon is Earth's natural satellite. It takes the moon 27 days and 8 hours to circle Earth.