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the asteroid hit earth and it blasted tonnes of mud and dust into the atmosphere and that blocked out the sun wich killed the plants and then the herbivores had nothing to eat so they died then the carnivores had nothing to eat after they died so all the animals got wiped out
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoThat was before the Big Bang. If the multiverse exists, there are many universes being created at this time. If the multiverse had a beginning, it was probably before this. If the multiverse was created off of this universe's parallel universes, then this multiverse didn't exist but others did. It is hard to know, nobody was there
Wiki User
∙ 12y agoThe Universe was created about 13.7 billion years ago.
Wiki User
∙ 12y agoSince the universe is only about 14 billion years old, nothing happened 65.5 billion years ago.
Wiki User
∙ 9y agoThere was life on Earth 3.5 billion years ago. Columbia University has a wonderful online timeline that has much more information.
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Scientists theorize that human life began about how many years ago?
3.5 billion years ago
When did eukaryotic cells evolve?
1.2-1.5 Billion Years ago!
How long ago did sexual reproduction begin?
Sexual species appeared about 1.2 billion years ago.
In Which eon do you find the earliest fossils?
3.5 billion years ago. It was bacteria
When did life on earth begin?
The earth began to be formed over 4.5 billion years ago,but for millions of years nothing could live here.Gradually,the earth's crust and the atmosphere formed.The simplest form of life, bacteria and algae,probably began to grow less than four billion years ago.Human beings did not appear until about two million years ago.
When do we believe the big bang happened?
Approximately 13.8 billion years ago.
What happened to the earth 700 billion years ago?
Earth did not exist 700 billion years ago, nor did the universe. Earth is about 4.6 billion years old.
According to the big bang hypothesis what happened 20 billion years ago?
The universe did not exist that long ago. The universe as we know it is only 13.7 billion years old.
What year was it when the big bang happened?
That is estimated to have happened something like 14 billion years ago.
How many years ago did the big explosion occur?
What explosion And if you are talking about the Big bang it happened about 13.7 billion years ago
The solar system was formed how many years ago?
it was actually form 4.6 billion years ago When The Big Bang Happened
What happened 3.8 billion year ago?
About 3.8 billion years is about the age of the oldest firm evidence of life on Earth.
What happened 3.8 years ago?
About 3.8 billion years is about the age of the oldest firm evidence of life on Earth.
How long ago was our solar system formed?
Sciences say that the sun was formed 4,600,000 years ago
When did the first galaxies and stars develop?
About 13-14 billion years ago. Cosmologists are not in agreement as to what happened the first few million or billion years, but most agree that the age of our Universe is about 15 billion years.
Was the earth around 7 billion years ago?
No, the earth wasn't around 7 billion years ago. Earth formed about 4.6 billion years ago.
Describe what happened 65 billion years ago when there was a cosmic collision with earth?
Earth did not exist 65 billion years ago. However 65 million years ago an asteroid collided with Earth, triggering a mass extinction even that wiped out a wide variety of organisms, including the dinosaurs.
