Stars
Welcome em
I find that http://www.nineplanets.org was always a good source for info for the solar system.
As for massive stars - try googling 'Eta Carina' and also 'Wolf-Rayet Stars" - they're pretty big....
![Very Happy :D](./images/smilies/icon_biggrin.gif)
I find that http://www.nineplanets.org was always a good source for info for the solar system.
As for massive stars - try googling 'Eta Carina' and also 'Wolf-Rayet Stars" - they're pretty big....
The Artist Formerly Known as Empeda
The universe simulator Celestia makes a vivid illustration of the differences in diameters stars can be. I took these screenies from within the program.
Here's the Sun, as seen from Saturn, at about 9 AU (Astronomical Units...1 AU is equal to the distance from the Sun to the Earth):
![Image](https://home.comcast.net/~matthew.paul/Images/SaturnSun.jpg)
Just a tiny yellow dot.
Now here's the red giant Betelgeuse (in the constellation Orion) at a distance of 9 AU:
![Image](https://home.comcast.net/~matthew.paul/Images/Betelgeuse9AU.jpg)
The giant doesn't even fit in the screen. Also, the distances are from the surfaces of the two stars...
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Here's the Sun, as seen from Saturn, at about 9 AU (Astronomical Units...1 AU is equal to the distance from the Sun to the Earth):
![Image](https://home.comcast.net/~matthew.paul/Images/SaturnSun.jpg)
Just a tiny yellow dot.
Now here's the red giant Betelgeuse (in the constellation Orion) at a distance of 9 AU:
![Image](https://home.comcast.net/~matthew.paul/Images/Betelgeuse9AU.jpg)
The giant doesn't even fit in the screen. Also, the distances are from the surfaces of the two stars...
![Shocked :shock:](./images/smilies/icon_eek.gif)
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Hello Dani
Thank you for the links
http://antwrp.gsfc.nasa.gov/apod/ap971008.html
http://www.xs4all.nl/~carlkop/lbv1806.html
These Giant stars are very interesting.
Has anybody calculated or estimated the mass.
I'd love to know the size of the Core.
Thank you for the links
http://antwrp.gsfc.nasa.gov/apod/ap971008.html
http://www.xs4all.nl/~carlkop/lbv1806.html
These Giant stars are very interesting.
Has anybody calculated or estimated the mass.
I'd love to know the size of the Core.
Harry : Smile and live another day.
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- G'day G'day G'day G'day
- Posts: 2881
- Joined: Fri Nov 18, 2005 8:04 am
- Location: Sydney Australia
By guesstimate and by the temperature and by the graviational effects on the surrounding space bodies.
The problem with distant giants is that you maybe looking at a multiple of stars looking as one.
My Question is that if you have a star 5 million times the size of our star. Why does it not behave like a black hole.
The problem with distant giants is that you maybe looking at a multiple of stars looking as one.
My Question is that if you have a star 5 million times the size of our star. Why does it not behave like a black hole.
Harry : Smile and live another day.