Earth Was Somewhere Else In The Galaxy When Dinosaurs Reigned

For Commerce / GDA

11/15/2019 | 05: 21 p.m.

Is usually
think that the Solar System does not move, that only the Earth and others
planets revolve around the sun, but astronomy has taught us that the
Universe is dynamic. Proof of this is that the largest objects in the cosmos
They also move in space.

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As
that the Earth, the stars also revolve around the black hole
supermassive located in the center of the Milky Way. Our star
It takes between 200 and 250 million years to orbit around the center of the galaxy.
That is, we are not always in the same place.

The
NASA scientist Jessie Christiansen explains to CNN that the stars more
close to the center of the galaxy they spin faster, while those of the
outer regions, such as the Sun, rotate more slowly. The Solar System and
All the stars in our "neighborhood" travel together.

I actually made a slightly updated version to address some of the critiques of the original (updated the period of rotation of the Galaxy, took out plesiosaurs since THEY'RE NOT ACTUALLY DINOSAURS JESSIE WHAT KIND OF NERD ARE YOU ANYWAY ?!) pic.twitter.com/LjLW6k5IGU

– Dr. Jessie Christiansen (@aussiastronomer) November 7, 2019

So,
depending on the moment when some events happened, the Earth will
I was in one place or another in the galaxy.

When the
dinosaurs reigned, our planet was on the other side of the Way
Milky, Christiansen explained in an animation released this month

Agree
to the researcher, the last time the entire solar neighborhood was in
the same area of ​​the galaxy, the first dinosaur began to emerge during the
Triassic period (250 million years ago).

These
animals evolved to expand throughout the world in the
Jurassic, which lasted 55 million years and was the period of greatest success for
dinosaurs Our planet was on the opposite side of the galaxy
when Cretaceous began (145 million years ago) and ended with the
extinction of dinosaurs 65 million years ago.

The
Dinosaurs better known as stegosaurus, iguanodon, titanosaur and
giganotosaurs lived during the early Cretaceous while Earth
It was exactly on the other side of the galaxy. When the tyrannosaur arose
rex, the Earth was "halfway" from where it is now.

Christiansen
concludes its simulation with the following question: “what will be on the planet the
next time we complete another orbit to the center of the galaxy? "


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