My current interest is black holes and quasars. I was wondering how often they erupt--specifically ours? Would it be blindingly bright on Earth? Finally, would there be any effects that would alter our life on Earth that we know of?
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2At least it was somehow active 2.5 to 4.0 million years ago according to this talk by Andrew Fox at the AAS2015, click "The Milky Way & Local Group", watch 15 minutes into it. And that event created the huge Fermi Bubbles. It indicates to me that it happens often and is harmless to us. – LocalFluff Jan 21 '15 at 08:48
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1possible duplicate of Was the Milky Way ever a quasar? – David Hammen Jan 21 '15 at 13:56
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@LocalFluff Very cool! What I gathered from that, combined with other information I've picked up, is that there is usually always something being forced out from a black hole pending on how much it is accumulating. That being said, it seems like since it's not a very active black hole that is does not have a quasar. – Scott Jan 22 '15 at 01:51
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To answer your question, the black hole in the milky way was never a quasar, and as it currently stands will never become one.
Info about how earth and life on earth could be affected if this ever happened, can be found here.
Jake Soleri
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That was a very good video. It cleared up a lot of misconceptions I had as well. Thanks! – Scott Jan 22 '15 at 02:18