What was the biggest asteroid impact? What is the danger of an asteroid impact? What happened when Comet Shoemaker-Levy 9 collided with Jupiter? When did the Great Meteor hit the Earth? Was Meteor Crater the first impact crater discovered? What would happen if VY Canis Majoris was our Sun?
IF 虚拟语气句型：不论主语是单数还是复数，其虚拟语气动词都只能用过去式，be 动词只能用 were。表示与实际情况不一致，亦或表达某种愿望或期望，本句表示与对未来的愿望。注意，现代英语语法也允许使用 be 动词的 was 形式接单数主语。
While this may seem like a very small change, it shows that-if a dangerous asteroid was heading toward us-it would be possible to knock it off its course, keeping Earth safe. The chances of Earth actually being hit by an asteroid large enough to cause damage are very small.12. What ...
If an asteroid collision could have the potential to obliterate our Earth, what would happen if we had a run-in with another planet? Surprisingly, in some cases, if they collided, they wouldn’t explode or shatter. If one of the planets is young and in what’s referred to as “an emb...
D.NASA's Double Asteroid Redirection Test failed. 答案(1)段落大意题。根据文章第一段By visiting these near Earth objects to study the material that came from the solar nebula,we can look for answers to some of humankind's most arresting questions,such as:How did the solar...
阅读理解 Scientists are worried that an asteroid(小行星)will possibly hit the earth in 2036.If scientists are right planet earth is 24 years away from a major disaster. Scientists h
What If an Asteroid Hit the Earth? What If Edit It looks like we don't have any company credits for this title yet. Be the first to contribute.Learn more Contribute to this page Suggest an edit or add missing content IMDb Answers: Help fill gaps in our data Learn more about contributin...
This award-winning video reveals what would happen if an asteroid hit the oceanKeegan LarwinJessica Orwig
RANDALL MUNROE, a former NASA roboticist, is the creator of the webcomic xked and the author of xkcd: volume O. The International Astronom ical Union recently named an asteroid after him; asteroid 4942 Munroe is big enough to cause a mass extinction if it ever hits a planet like Earth....
62. What do scientists say about the collision of an asteroid with Earth? A. It is very unlikely but the danger exists. B. Such a collision might happen once every 25 years. C. It’s still too early to say whether such a collision might happen. D. Collisions of asteroids with Earth...