Why Do We Exist? Harvard researcher and leading theoretical physicist Lisa Randall developed a

revolutionary theory on why we human exist. Oddly, it’s connected to dark

matter and the extinction of dinosaurs 66 million years ago. In her new book

“Dark Matter and the Dinosaurs”, she gives insights into her theory and why dark

matter gave our ancestor primates a chance to thrive.

About 66 million years ago, a colossal object hit earth.

Most researchers believe this object could have been

a comet of immense size. The impact of the object

killed around 75% of all species across the planet

instantly and later killed 24% more because of climate

change and poor living conditions. Only 1% of all the

animals alive today existed before that time. Randall

states in her theory that the colossal object hitting earth

could have been caused by dark matter around our

galaxy, the Milky Way. Until now, dark matter has not

been detected but measurements suggest that dark matter has a strong

gravitational force on the objects in our universe. Randall believes that dark

matter could be concentrated in giant bubbles (or halos) around galaxies.

Randall nevertheless thinks that dark matter could also be concentrated in so-

called ‘dark discs’. These dark discs could be the reason why such an object

struck the earth in the first place.

DID YOU KNOW?

Around 85% of all matter in the universe supposedly is dark matter.

 Dark  Matter  And  The  Dinosaurs  :  Business  Insider  

Here’s how Randall explains it. She believes the dark

matter disc has a strong gravitational influence on the

outer region of our solar system, the so-called ‘Oort

Cloud’ which contains billions of objects similar to the

object that struck earth 66 million years ago. Randall

figures that the gravitational force could have forced

one of these objects out of the Oort Cloud and brought

it close to earth.

Interestingly, she calculates that the earth should pass the dark

disc every 25-35 million years, which is also the approximate time

frame mass extinctions happened in earth’s history. Youpaper.org