nebular hypothesis theory

7/25/2019 Nebular Hypothesis Theory

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Nebular Hypothesis TheoryNebular Hypothesis Theory


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What is a Theory?What is a Theory?

A theory is both a goal and a tool ofA theory is both a goal and a tool of

researchresearch

Theories ask the questions that lookTheories ask the questions that lookbeyond the facts and laws of sciencebeyond the facts and laws of science

Theory statements can be refuted, but notTheory statements can be refuted, but not

verified, no matter how strongly we believeverified, no matter how strongly we believe

in the truth of a theory !t is alwaysin the truth of a theory !t is always

possible for it to be falsifiedpossible for it to be falsified


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Nebular Hypothesis TheoryNebular Hypothesis Theory

The birthplace of our solar system was aThe birthplace of our solar system was a

N"#$%AN"#$%A

&A nebula is a 'fu((y) patch in the sky, eitherA nebula is a 'fu((y) patch in the sky, either

light or dark* a cloud of gas and dustlight or dark* a cloud of gas and dust

& +ur solar system evolved from a swirling+ur solar system evolved from a swirling

cloud of dust cloud of dust Nebular Theory)Nebular Theory)

& -ravity caused the gases and dust to be-ravity caused the gases and dust to bedrawn together into a denser cloud rate ofdrawn together into a denser cloud rate of

rotation increased.rotation increased.


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Nebular Hypothesis Theory contNebular Hypothesis Theory cont

&As a result the cloud collapsed to resembleAs a result the cloud collapsed to resemblea disk /ost of the mass collapsed in thea disk /ost of the mass collapsed in thecentercenter

& /atter in the rest of the disk clumped/atter in the rest of the disk clumpedtogether to form planetesimals 0together to form planetesimals 0protoplanetary bodiesprotoplanetary bodies

& Hydrogen gas combined or fused to formHydrogen gas combined or fused to form

helium atoms nuclear fusion & a source ofhelium atoms nuclear fusion & a source ofenergy from the sun1.energy from the sun1.

The Sun was born!!!The Sun was born!!!


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"2amples of Nebulas"2amples of Nebulas

"agle Nebula"agle Nebula


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+ne last e2ample+ne last e2ample

3ats "ye Nebula3ats "ye Nebula


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"2amples of Nebulas"2amples of Nebulas

+rion Nebula+rion Nebula

& %ocated in the%ocated in the

constellation +rionconstellation +rion


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+ur solar system+ur solar system

Terrestrial planets4Terrestrial planets4

inner part of solarinner part of solar

systemsystem

3haracteristics4 small3haracteristics4 smalland rockyand rocky

& /ercury/ercury

& 5enus5enus

& "arth"arth

& /ars/ars


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+ur solar system+ur solar system

-as giants4 larger planets-as giants4 larger planets

3haracteristics4 colder and covered with Hydrogen gas 6 liquid.3haracteristics4 colder and covered with Hydrogen gas 6 liquid.& 7upiter7upiter& 8aturn8aturn& $ranus$ranus

& NeptuneNeptune9luto4 no longer considered a planet but still there1119luto4 no longer considered a planet but still there111


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9lanets continued.9lanets continued.

:otation is how long it:otation is how long ittakes for a point ontakes for a point onplanet to spin aroundplanet to spin around

and face the sunand face the sun& %ength of day%ength of day

:evolution is how:evolution is howlong it takes a planetlong it takes a planet

to go around the 8un*to go around the 8un*also known as orbitalso known as orbit& %ength of year%ength of year


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+ther stuff in the solar system+ther stuff in the solar system

3omets3omets

AsteroidsAsteroids

/eteoroids/eteoroids

-as-as

;ust;ust

8atellites8atellites

8pace '7unk)8pace '7unk)3an you think of3an you think ofanything else?anything else?


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3omets & Halley yrs @3omets & Halley yrs @& /i2tures of fro(en gases, ice and rocky debris/i2tures of fro(en gases, ice and rocky debris

& +uter solar system+uter solar system& %ooping orbits bring close to the 8un, ice melts thus having streaming tails%ooping orbits bring close to the 8un, ice melts thus having streaming tails

AsteroidsAsteroids& ;ark, rocky bodies that orbit the 8un;ark, rocky bodies that orbit the 8un


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/ilky Way -ala2y/ilky Way -ala2y

8wath of light formed8wath of light formedby the glow of billionsby the glow of billionsof starsof stars

Blat spiral collectionBlat spiral collectionof starsof stars

%argest celestial%argest celestialfeaturefeature

Bormed C@ billionBormed C@ billionyears agoyears ago


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+ther -ala2ies+ther -ala2ies

Whirlpool -ala2y Andromeda -ala2y

8ombrero -ala2y %ar e /a ellanic 3loud


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Halley

nebular hypothesis theory

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