Twinkle Twinkle Little Star: BGP's Astronomy Thread

Page 2 of I'm sure there are several astronomy enthusiasts here, besides TB&G and myself. I can't get enough of astronomy and I never get tired of learning n... 21 comments | 384 Views | Go to page 1 →

  1. #16
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    Our pitiful little sun...

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    Can you add V-Y Canis Majoris to that one?

  3. #18
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    Here's a quick one minute video showing the size comparison of our sun to larger stars, including the largest one, UY- Scuti.


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    What a phenomenal thread @Science Friction

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    Quote Originally Posted by theguru View Post
    What a phenomenal thread @Science Friction
    Thank you very much. I've not had the time to add much the last few days but I will keep at it. Nothing fascinates me more than our universe and its many mysteries.

  6. #21
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    One of my favorite red supergiants is a star that most of you have heard of and many of you have probably seen in the night sky. It's the ninth brightest star in the night sky and is 642.5 light years from Earth. Of course, it Betelguese.

    While very unlikely, it is possible we could bear witness to a once in a millennium cosmic event thanks to the famous red supergiant dying star. I would say Betelguese will go supernova on the universe's butt in 100,000 to 1,000,000 years(probably closer to the million) but it is not out of the realm of possibility that it could happen tomorrow or next week or next month. Scientists know it's only a matter of time until it blows. If Betelguese blew up , say 600+ years ago(highly unlikely but possible), then we will be treated to some kind of spectacular treat in our lifetime. Let's just say I'm not holding my breath, but I am hoping we win the celestial lottery and get to witness this event.

    Here are a few facts about Betelguese:

    *Betelgeuse is 642.5 light years from Earth.
    *It is classed as a red supergiant and is the tenth brightest star in the night sky.
    *As part of the Orion constellation Betelgeuse can be easily found in the night sky through most of the year.
    *High mass stars such as Betelgeuse burn their fuel extremely quickly, as a result they exist for only a few million years, stars such as our sun exist for billions of years.
    *At only 10 million years old Betelgeuse is already near the end of its lifespan and is expected to explode as a supernova in the next million years.

    *Supernovas occur when high mass stars can no longer fuse elements in their core.
    *When Betelgeuse explodes it will appear as bright as the moon in the night sky for several weeks and may even be visible during the day.
    *Supernovas produce deadly bursts of gamma ray radiation but fortunately Betelgeuse is too far away to cause any damage to Earth.
    *Betelgeuse can acceptably be pronounced as 'Beetlejuice' although there are several variations in its pronouncement.

    Betelgeuse Radius
    *Betelgeuse has around a thousand times the radius of the sun, if it was placed in the center of our solar system the star would reach beyond the orbit of Jupiter!
    Betelgeuse Mass
    *Betelgeuse is estimated to have a maximum mass of around 20 to 30 times that of the sun.
    Betelgeuse Temperature
    *Betelgeuse is estimated to have surface temperatures of around 3200C (5800F), around 60% as hot as the sun.
    Betelgeuse Luminosity (energy emitted)
    *Due to its enormous size Betelgeuse is around 100,000 times more luminous than the sun.

    Betelgeuse Statistics
    Also Known As: Alpha Orionis
    Distance From Earth: 642.5 light years
    Constellation: Orion
    Star Type: Class M Supergiant
    Mass: Estimates average around 20 times the mass of the sun
    Luminosity: Approx 100,000 x Sun
    Diameter: Approx 850 million miles (1.4 billion km) - 1000 x Sun
    Temperature: Approx 3200C (5800F)
    Age: Approx 10 million years old
    Rotation Period: Estimated around 15 to 30 years

  7. #22
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    Betelguese- Gonna go bang bang:

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