The Late Heavy Bombardment (LHB) refers to a period around 4.1 to 3.8 billion years ago when the inner solar system experienced a high frequency of asteroid and comet impacts. This event is believed to have significantly shaped the surfaces of the terrestrial planets, including Earth, Mars, and the Moon. The LHB is evidenced by the numerous craters found on these bodies, particularly on the Moon's surface. Scientists study the LHB to understand the early conditions of the solar system and the potential for life on Earth. The impacts during this time may have contributed to the delivery of water and organic materials, which are essential for the development of life. Understanding the LHB helps researchers piece together the history of planetary formation and evolution.