Betelgeuse is Getting Ready to Go Supernova…


Date: October 22, 2018

01) Betelgeuse is Getting Ready to Go Supernova


“The red supergiant star Betelgeuse is getting ready to go supernova, and when it does Earth will have a front-row seat. The explosion will be so bright that Earth will briefly seem to have two suns in the sky.

The star is located in the Orion constellation, about 640 light-years away from Earth. It’s one of the brightest and biggest stars in our galactic neighborhood – if you dropped it in our Solar System, it would extend all the way out to Jupiter, leaving Earth completely engulfed.

Citation:
https://io9.gizmodo.com/5738542/earth-may-soon-have-a-second-sun

Someday soon (astronomically speaking), it will run out of fuel, collapse under its own weight, and then rebound in a spectacular supernova explosion. When this happens, Betelgeuse will brighten enormously for a few weeks or months, perhaps as bright as the full moon and visible in broad daylight.

When will it happen? Probably not in our lifetimes. But, in fact, no one really knows. It could be tomorrow or a million years in the future.”

2 thoughts on “Betelgeuse is Getting Ready to Go Supernova…

  1. feinmann0

    Warning: factoids

    Another fascinating future cosmic event must surely be the fate of Eta Carinae, about 7,800 light years away … possibly one of the largest star systems in our galaxy. Whilst Betelgeuse is 25 times the mass of the sun, the binary Eta Carinae system comprises Star A at 120 times the mass of our sun, and Star B at 30 times. Each elliptically orbits the other in a deadly embrace, periodically ripping out vast amounts of mass from Star A.

    During the 19th Century, Eta Carinae underwent a failed hypernova and it was possible to read at night in the southern hemisphere due to the star system being the second brightest object in the night sky at that time – Sirius is the brightest but just nine light years away from us.

    Star A lost one solar mass every year for ten years during this event. The material ejected by the explosion has created the awesomely beautiful Homunculus Nebula: en.wikipedia.org/wiki/File:Eta_Carinae.jpg

    Reply

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