posted on Jan, 24 2014 @ 07:29 AM
Next could possibly be Eta Carinae (η Carinae) in Carina constellation. Its very likely that it will go Supernova or Hypernova in less than 1 million
years. It could happen today, next week, next year, you name it. And its uncomfortably close, only 7 500 to 8 000 light years away. Its not actually
single star, its stellar system, with 2 or more stars. The most luminous star (Luminous Blue Variable, LBV), is about 150 solar masses, and has
already lost 30 solar masses. It has Red Supergiant as company, which is about 30 solar masses. The nebula around the stars is so thick that the Red
Supergiant is mostly concealed.
It was discovered in 1677 as 4th magnitude star (visible in Southern Hemisphere), but in 1730 it was noticed that it was brightened considerably. It
was categorized as 2nd magnitude star, but in 1782 it was returned as 4th magnitude as it was dimmer than before. In 1843 it was brighter than ever
before, its brightness was more than tenfolded from before, with magnitude of -0,8. It was second brightest star in night sky after Sirius.
Sometimes Eta Carinae has strong outbursts, latest in 1841. Between 1900 and 1940 the star was 8th magnitude, invisible to human eye. In 1998 and 1999
it was very bright again, when it was 2 times brighter than before. In 2007 it was again visible to naked eye, as 5th magnitude star.
Its age is completely unknown, so its impossible to predict when it might go supernova, but its acting like something is going on. If it goes
Supernova or Hypernova, it would have some effects on Earth. Atmosphere would likely to protect us from Gamma Rays, but they might fry the ozone
layer, leading to increased UV-radiation. It would damage the satellites and people on ISS would get lethal doses of radiation. We are safe from
deadly Gamma-Ray Bursts as they come from Star's poles and its rotational axis doesn't point to our Solar system.
At least one scientist has said that Supernova would be so bright that it would be visible during the day and you could read newspaper in its light
during the night.