The Largest meteorite craters

About 500 meteroites reach Earth every year. Many collision sites have been altered by weather over millions of years, and scientists are unsure whether some craters are actually the craters of extinct volcanoes. Those below are all agreed to be meteorite craters.

1 Verdefort, South Africa 300 km (186 miles) in diameter

2 Sudbury, Ontario, Canada 250 km (155 miles) in diameter

3 Chicxulub, Yucatan, Mexico 170 km (106 miles) in diameter

4 Manicougan, Canada 100 km (62 miles) in diameter

5 Popigal, Russia 100 km (62 miles) in diameter

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Names of months

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Chinese calendar

Present-day China uses the Gregorian calendar for most purposes, but traditional festivals, such as Chinese New Year, take place according to the ancient Chinese calendar. Legend has it that this was started during the reign of Emperor Huangdi in 2637 BC, and relates to the positions of the Moon and Sun. Heavenly systems Earthly branches 1 jia 1 zi (rat) 2 yi ...

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