小行星近距离掠过地球,威力等于30颗广岛原子弹

发布时间:2021-07-05    来源:2020欧锦赛买球app nbsp;   浏览:23488次
本文摘要:Scientists revealed an asteroid dubbed by some as a city killer came closer to the Earth than the moon this week.科学家透露这周有一颗被科学家誉为为“城市杀手”的小行星间距地球比月球表面还接近。

2020欧洲杯买球app

Scientists revealed an asteroid dubbed by some as a city killer came closer to the Earth than the moon this week.科学家透露这周有一颗被科学家誉为为“城市杀手”的小行星间距地球比月球表面还接近。The Washington Post reported that scientists apparently had no idea it was coming.《华盛顿邮报》报道称作科学家好像不告知这颗小行星相邻。Asteroid 2019 OK came hurtling toward Earth at a speed of nearly 15 miles a second, before flying past.小行星2019 OK以类似15公里/秒的速率飞奔向地球,随后从地球边横穿。According to NASA, it was about 45,000 miles from Earth on July 25.NASA称作7月25日它间距地球大概45000公里近。

It would have hit with over 30 times the energy of the atomic blast at Hiroshima, astronomer professor Alan Duffy told the Sydney Morning Herald.天文学专家教授Alan Duffy对《悉尼先驱晨报》说道:“撞击杀伤力高达广岛原子弹发生爆炸事故动能的30倍”。Duffy called the zooming space rock a city killer.Duffy将这颗快速的外太空岩层称之为“城市杀手”。Astronomers say it posed no immediate threat but they admit they had no idea the giant rock was headed our way, because it came from the direction of the sun.科学家说道它并不包含必需威协,但她们否定并不了解这一巨大岩层朝大家飞到,因为它来源于太阳光的方位。The asteroid, about the size of a large boulder, only became visible a few days ago.这颗大概为大石头尺寸的小行星几日前才可以被认真观察到。

2020欧洲杯买球app

There are 20,000 near-Earth asteroids and they do occasionally make an appearance. In 2013, one slammed into Russia, injuring 1,600 people.近地小行星有20,000颗,有时不容易经常会出现。二零一三年有一颗小行星撞来到乌克兰,造成 1600人伤情。

2020欧洲杯买球app

2020欧洲杯买球app

At a conference in April, scientists from around the world were asked how to respond to a make-believe scenario in which an asteroid big enough to destroy a major city might be on track to strike the Earth in eight years.四月份一次大会上,全世界的科学家被问起假定一颗不能损坏一个大城市的小行星八年里会撞击地球,该怎样应对。The likely response would be using space ships to give the asteroid a nudge, one scientist said.一位科学家说道:“脱离实际的方式是运用太空飞船引一下这颗小行星”。

All we have to do is change its speed a little faster or a little slower so that when it crosses Earths orbit, it crosses either in front of us or behind us, said Dr. Lori Glaze, director of planetary science at NASA.NASA大行星科学部责任人Lori Glaze博士研究生说道:“大家务必保证的便是将其速率逆快一点或缓减一点,让其历经地球路轨时要不向前稍一点,要不往后面稍一点”。


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