65 million years ago, an asteroid crashed into Earth. 1. It was 15 kilometers wide. 2. It killed the dinosaurs and _70_% of all other life. 3. It caused a shockwave that killed anything within _150_ kilometers in _10_ seconds. 4. It made a crater in Mexico that is _180_ ...
What happened after a giant asteroid crashed into the Earth near Chicxulub, Mexico? A. It caused the extinction of the dinosaurs. B. It made a very large crater. C. It changed our planet forever. D. It caused almost 90% of all life on Earth to die out. ...
In this programme, scientists will tell the fascinating story of how Earth developed, how this ball of ice and dust became the planet of life. In their laboratories or out on the ground, they continue their research into the extraordinary circumstances which allowed life to appear and eventually...
If enough of them crashed into Earth,that schreibersite could have provided the right amount of phosphorus.However,life began between 3.5 and 4.5 billion years ago. and that's when fewer meteorites were impacting Earth. Schreibersite has another source called fulgurite, otherwise known as the ...
beamscrashedintoapolishedmirror—thelightbucketoftheHubbleSpaceTelescope. InareportpublishedWednesdayinthejournalNature,ateamofastronomersassertsthatthis isthemostdistantindividualstareverseen.Theydescribeitas50to100timesmoremassivethan oursun,androughly1milliontimesbrighter,withitsstarlighthavingtravelled12.9billionyears...
Sixty-five million years ago an asteroid (小行星) that crashed on Earth led to the disappearance of the largest animals that have ever walked our planet – the dinosaurs. At least this is what some scientists believe. But that accident
The young Earth was still molten, and it was surrounded by dozens of smaller almost-planets. One such object, roughly the size of Mars, crashed into the Earth. That collision vaporized a good chunk of our planet’s mass, sending it into orbit. Most of it rained back down, but some ...
When it crashed to earth, it would have been traveling 12 miles per second, creating a crater about 100 miles wide. Because of its speed, the asteroid would have ripped a giant hole in the earth's atmosphere. Parts of the earth's crust would have been blown into the upper atmosphere ...
In 1996, news agencies around the world ran stories making the announcement of a possible sign of ancient Martian life in the asteroid Allan Hills 84001, a piece of Mars that crashed into Earth 13,000 years ago, followed a 17 million-year-long-journey. This evidence for alien life was lat...
Shortly after, this statement was retracted and it was said that it was a weather balloon that crashed. However, years later one local mortician even claimed that the military had him secretly perform an autopsy on a dead alien body. Others believe that there certainly are other life forms ...