Scientists studied meteorites from the large asteroid Vesta and found evidence of an event called a late heavy bombing, which was different from what scientists had previously thought. The event is characterized by massive impacts on planets such as earth, but it may have occurred earlier than previously thought. The study suggests that later heavy bombing may be more gradual and less intense. < / P > < p > what scientists call late heavy bombing is thought to have occurred 3.9 billion years ago, marking an increase in asteroid impacts in the asteroid belt between Mars and Jupiter. Now, new research questions that timeline, suggesting that late bombings were either much earlier than people thought or might not have happened at all, at least as described by the researchers. The study, published in the journal earth and Planetary Science Letters, focuses on space rocks known as 4-vesta. It’s the second largest object in the asteroid belt, and it can tell us a lot about the upheaval that the solar system has experienced over billions of years. < / P > < p > “meteorites provide us with our own earliest history,” Professor Yuji Sano, co-author of the study, said in a statement. “That’s what fascinates me. By studying the properties of meteorites that fall on earth, such as radioactive decay products, we can infer when and where they came from. In this study, we studied meteorites from Vesta, the second largest planet after the dwarf planet Ceres < / P > < p > when researchers studied the asteroid, they found that the asteroid was full of impact marks, which is not rare for asteroids of its size. However, when looking closely at the meteorite known to have originated from the larger Vesta star, the team found signs that it had been heavily bombed between 4.15 and 4.4 billion years ago, much earlier than the thought of late heavy bombardment. < / P > < p > this may indicate that the late heavy bombing is not a concentrated period of time, in which a large number of impacts occurred, but a long period of time, in which the whole system was regularly impacted. < / P > < p > “the Vesta meteorite clearly showed us an earlier impact than LHB, which raised the question,” did the late heavy bombing really happen? ” Sano proposed. “In our view, the impact of the early solar system peaked earlier than LHB and steadily decreased over time. It may not be the catastrophic period of chaos described by the current model. ” < 4 < air < 4 core= target=_ blank>Didi Qingju bicycle has entered 150 cities