500 million is a very big number
This image was recently posted on Facebook’s “I Fucking Love Science” page. The guys there are happy to share, so here it is for those who missed it.
Yes, I know life doesn’t HAVE to be confined to the Goldilocks zone (the space around a star where liquid water could exist). After all, life doesn’t have to look like Earth life. And nobody is suggesting that ‘life’ means technology. And nobody is suggesting that there might be lots of excellent reasons why life didn’t form on these planets, or why beings like us couldn’t exist on those planets. I talked about this a bit here.
However. 500 million is a very big number. Let’s do something else totally unscientific and suggest that just 1% of those planets have life. That’s 50,000. Too optimistic? What about .01%. That’s 5,000.
Anybody want to lay bets that there is no life out there? No, me either.
Posted on 5 December 2012, in Black Tiger, Science fact and tagged Black Tiger, blog tour, earthlike, exoplanets, goldilocks zone, life, planet estimates, size of galaxy, space, space exploration. Bookmark the permalink. 5 Comments.