Thursday, October 7, 2010

I CALL IT "NEW NEW CAPRICA": Scientists just1 started a comprehensive search for planets similar to Earth, and just like that, lickety-Carnegie-split2, they found one. It's called Gliese 581g. They found it so fast, in fact, that they're estimating that one out of every ten stars may have an Earth-like planet.3 The conversation went like this:
Smart Person: Let's look for planets!
Other Smart Person: Great idea! I'll get started right aw...
Third Smart Person4: Found one!
Some cool things about Gliese 581g, assuming (perhaps overly optimistically) that it has water:
  • The same side faces the sun all the time. So everybody can choose to live in the "twilight zone" -- the part of the planet where it's not superhot or supercold, and where it's always basically dusk.
  • This would make solar power really efficient.
  • It would also mean that you could mow your lawn any time of the day.
  • Sentient beings from Gliese 581g would find our alternating day and night terrifying, or downright inconvenient.
  • It's three times as big as Earth, so everybody can have a yard.
  • It has a 37-day orbit, meaning that the Summer Olympics would happen every 148 days.
Some not great things about Gliese 581g:
  • It's three times the mass of earth, so walking up stairs would be murder.
  • Might not have water, or might be an uninhabitable planet made of sulphur-smelling gas.
Is it just me, or is your first reaction to learning of a possibly inhabitable planet in a distant solar system, "how soon can I get there?"5

1Just" is in astronomical units of time, roughly translating to 10 earth years.
2Astronomy pun.
3Based on a sample size of ten stars surveyed and one Earth-like planet found. Results may not be statistically significant.
4After pause of 10 years during which other Smart Persons invented Facebook, Twitter, skinny jeans, Pinkberry, and Plants vs. Zombies.
5Approximately 20.5 years, assuming that you are a beam of light; longer if you are not.