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Stuff About Space


CHAPTER 1


HOW DID THE UNIVERSE BEGIN

THE UNIVERSE BEGAN BECAUSE OF THE BIG BANG WHICH HAPPENED ABOUT 13.8 BILLION YEARS AGO. THE BIG BANG IS A THEORY THAT A BELGIM PREIST GEORGES LEMAÎTRE CAME UP WITH IN 1920. THE BIG BANG HAPPENED WHEN BIG CLOUDS OF HELIUM AND HYDROGEN COLLIDED TO FORM STARS AND GALAXIES.


THE VERY FIRST ELEMENTS WERE HYDROGEN AND HELIUM. THEY WHAT IS AN WERE CREATED 14 BILLION ELEMENT AND WHAT YEARS AGO AND IT TOOK ATOMS WERE THE FIRST 380,000 YEARS FOR AN ELEMENTS CREATED? ELECTRON TO GET TRAPPED IN A NUCLEI AND TURN INTO AN ELEMENT. AN ELEMENT IS A SUBSTANCE WHOSE ATOMS HAVE THE SAME NUMBER OF PROTONS.


ELECTRONS GOT HOW DID THE FIRST TRAPPED IN ORBITS ELEMENTS FORM AROUND NUCLEI, FORMING THE FIRST ELEMENT. IT WAS HYDROGEN. THAN IT WAS HELIUM.


WHAT EVIDENCE DO WE HAVE FOR HOW THE THE EVIDENCE WE HAVE HUBBLES LAW, THE UNIVERSE FORMED HUBBLES LAW STATES THAT THE REDSHIFT IN THE SPECTRA OF DISTANT GALAXIES ARE PROPORTIONAL TO THEIR DISTANCE.

DISCOVERY AND MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND, AND THE ABUNDANCES OF LIGHT PRODUCED BY THE BIG BANG.

IS


CHAPTER 2


STARS STARTED TO FORM WHEN AND HOW INSIDE CONCENTRATIONS DID STARS BEGIN OF GAS AND DUST. IT IS EXTREMELY COLD AND TO FORM ALL OF THE ATOMS AND MOLECULES GOT CLOSER AND CLOSER UNTIL THEY COLLIDE. THEY FORMED ABOUT 200 MILLION YEARS AFTER THE UNIVERSE WAS CREATED.


WHAT IS NUCLEAR FUSION AND HOW DOSE IT FUEL STARS

NUCLEAR FUSION IS A NUCLEAR REACTION IN WHICH ATOMIC NUCLEI OF LOW ATOMIC NUMBER FUSE TO FORM A HEAVIER NUCLEUS WITH THE RELESE OF ENERGY

NUCLEAR FUSION FUELS STARS BY CONVERTING HYDROGEN ATOMS INTO HELIUM ATOMS THROUGH A MULTI STAGE PROCESS.


HOW DOES NUCLEAR FUSION WORK? WHAT IS NEEDED AND WHAT IS MADE?

NUCLEAR FUSION, YOU NEEDÂ ENERGY WHEN TWO ATOMS JOIN TOGETHER TO FORM ONE. NUCLEAR FUSION IS MADE BECAUSE THE ENERGY IS PRODUCED BY FUSING TOGETHER LIGHT ATOMS.


CHAPTER 3


HOW DO WE GET ELEMENTS LARGER THAN IRON?

LOTS OF ELEMENTS HIGHER THAN IRON ARE FORMED FROM SUPERNOVA EXPLOSIONS.


THE LIFE CYCLE OF A STAR HOW DO STARS DEPENDS ON HOW BIG THE CHANGE OVER THE MASS OF THE STAR IS. COURSE OF THEIR HIGHER MASS STARS GROW LIFE CYCLE? EASIER THAN LOWER MASS STARS.


WHAT DECIDES OR INFLUENCES THE LIFE CYCLE OF A STAR?

THE MASS OF THE STAR DECIDES THE LIFE CYCLE/SPAN OF THE STAR


CHAPTER 4


HOW DO WE DETERMINE THE COMPOSITION OF STARS AND OTHER OBJECTS IN SPACE?

WE DETERMINE THE COMPOSITION OF STARS, PLANETS, AND OTHER OBJECTS WITH SPECTROSCOPY. THIS PROCESS USES INSTRUMENTS THAT SPREADS OUT LIGHT FROM AN OBJECT BY WAVELENGTH. THE LIGHT THAT IS SPREAD OUT IS CALLED A SPECTRUM


SOURCES

WWW.ASTRONOMY.COM Â HTTPS://IMAGINE.GSFC.NASA.GOV HTTPS://WWW.CLASSZONE.COM HTTPS://WWW.QUORA.COM HTTPS://SCIENCE.HOWSTUFFWORKS.COM

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Stuff about science . by Nathaniel Hayden  

Stuff about science . by Nathaniel Hayden  

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