10/21/19 (Late) Georgiy Mamchyn PD 7

October 21, 2019 PD 7 

Guest of the Day: Dr.Davis

How did the Universe begin? Big Bang theory 

 What are we made of? Organic Molecules Since light takes time to get here the further we

look the further in time we see. Fun Fact:  Illinois has very little light pollution for us to see the

Milky Way • If the aliens looks at us from their planets they wouldn’t see the present day earth

due to the large distance between us. • An effort to explain what happened at the very

beginning of our universe sprang into existence around 14 billion years ago • It’s arrogant to

think that out of millimeters of planets and thousands of galaxies we are the only planet with

life on it. • Universe is like a balloon it’s always expanding if you draw something on the ballon

and pump it with air the balloon will expand and everything will move away. 

BigBang Theory: 1. Why butterfly shape. We haven’t looked there yet • We can’t see in

specific spots so not the whole map is mapped • The reason for that is because we cant

see in every direction form the Earth How do we know how thick the noise is? We measure

the energy of the noise. Singularity Gravity infinite + finite matter = infinite density Big Band

Theory Sir Fred Hoyle • An English astronomer • Steady state theory • The theory of

stellar nucleosynthesis Edwin Hubble:: By examining the light emitted from neighboring

galaxies and making detailed observations of an electromagnetic property • red shift

Hubble showed that other galaxies appeared to be accelerating away from the Milky Way 

Will the universe ever stop expanding? no answer ⿞ What will happen if the universe will

stop expanding? No answer

Cosmic microwave background: The cosmic microwave background is ancient radiation

leftover from a time roughly 380k • NucelosynthesisElements heavier then helium are

formed from nuclear reactions in the stars Where did we come from? About 4 billions ears ago

from radiocarbon dating • Need to be able to dissolve something, so water is one of the bets •

Water has to be not frozen from being too far from the sun • Water cant be evaporating from

being too close to the sun • 

How do we get from basic proteins to us? Small molecules to make larger molecules •

Chemical changes are slow without a catalyst • Autocatalytic Sets: a + b — c + X, catalyzed by Y • c + b — a + Y, catalyzed by X •