This threat is all about the life and death of stars, and
precisely where you happen to be
when it happens.
In five billion years, give or take a billion, in its death
throes the sun will bloat like a gassy balloon … maybe as far as Mars.
Unfortunately, Earth is in the way. Sayonara sapiens. http://www.youtube.com/watch?v=q9L7SMoT3RM
But we won’t have to wait that long. In about a billion
years, give or take a few hundred million, the sun will be unbearably hot. It’s
already about 30% hotter than in its youth. Talk about climate change. http://io9.com/what-the-death-of-the-sun-will-look-like-471796727
But maybe even before that, solar storms will get us. 1859
was the year of the last big one. http://www.space.com/12584-worst-solar-storms-sun-flares-history.html
To the point, we’ll be gone long before the sun dies. But it
doesn’t even have to be our star that does the job. Every 225-250 million years
we complete an orbit of the galactic center. While there are currently no
candidates for supernovae in our neighbourhood, if we wait long enough, like
the weather, that’ll change. Do you know where your sun has been? http://www.dailygalaxy.com/my_weblog/2011/12/are-we-entering-the-danger-zone-the-solar-systems-250-million-year-orbit-through-the-milky-way.html
Next blog, Threat #3.
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