Star universe
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Transcript of Star universe
![Page 1: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/1.jpg)
STAR UNIVERSE By Sim & Summer
![Page 2: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/2.jpg)
Cool & hot stars
=3200c =10000c
=4900c =30000c or a bit more! =6000c
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Star sizes Sirius B : 0.08 the size of the sun! Alpha Centauri: 1.2 the size of the sun! Vega: 2 the size of the sun! Capella: 13 the size of the sun! Aldebaran: 46 the size of the sun! Betelgeuse:230 the size of the sun!
![Page 4: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/4.jpg)
How heavy is a star
It would depends on the mass of original
star and the nature of the explosion it
cant be much more than about there
times the mas it would crate a black hole
rather than neutron star!
I believe stars weigh about
150,000,000,000,000,000,000,000,000,0
00,000 KG.
![Page 5: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/5.jpg)
Supernovas When a massive star dies, it does so in a
spectacular explosion known as a supernova
Supernovas are very rare .Of the roughly 200 stars in our galaxy, only one explodes per century on avarage!
![Page 6: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/6.jpg)
What is a high mass star?
A high mass star is a star which is anything over 8 times the mass of the sun!
![Page 7: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/7.jpg)
Big & small stars!
There are giant stars in space that can be 100 times larger than the sun , there are dwarf stars that can be 100 times smaller than the sun!
![Page 8: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/8.jpg)
Which stars live for longer
The smaller stars live longer , it lives for billions of years , big stars die out in a few million years !
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Are stars big or small ?
There are giant stars in space that can be 100 times larger than the sun , there are dwarf stars that can be 100 times smaller !
![Page 10: Star universe](https://reader036.fdocuments.net/reader036/viewer/2022062517/568130ab550346895d96b431/html5/thumbnails/10.jpg)
Star facts
Stars have hydrogen gas & don’t have solid surfaces , temperatures of almost 3000 to 30000 C .The sun is almost 1.4 million kilometers across and it’s just a medium size dstar !
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How fast does light travel ?
Light travels at an amazing 300,000 kilometers per second !
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Biggest star known
The biggest star known is the hypergiant Cygnus , witch is 810,000 times as bright as the sun !