The discovery of a possible earth-type planet in star-system Gliese 581 has been in the news today and has brought up the possibility of extra-solar life.
The planet was found in its star’s “habitable zone” where water retains its liquid state. According to exobiologists, liquid water is needed to be a solvent for life as we know it requires for survival. Although the newly discovered planet has gravity that is 1.6 times the Earth’s and life has not yet been discovered there, the discovery of the planet alone is significant because astronomers are able to discover smaller and smaller planets, not just the large gas giant types.
I’m mentioning this because this ties into what I’ve been saying today; that we are probably not alone in the Universe and tinfoil aliens, UFOs, Star Trek and Area 51 aside, there will come a day when we’ll meet ET. And hopefully not shoot him in the process.
Major Discovery: New Planet Could Harbor Water and Life by Ker Than, Space.com Staff writer