So to those unaware – “gliese 581 d” and “gliease 370 b”(known in alternative names…) are 2 planets recently discovered – and they may host life.. that is…alien life. For more info: http://en.wikipedia.org/wiki/HD_85512_b
Now..this got me thinking – while some people claim that we will never reach such distant planets, they completely neglect factors such as time dilation and constant acceleration – both of which permitting anything in the universe to be reached in a short period of time..as long as we have practical means of achieving this – currently to the best of my knowledge – solar sails aren’t good enough for the job and only radiation from a black hole will have an impusle strong enough for a super fast space rocket…but that’s hypothetical. So…i am still an optimist and believe that in 500 years we will be able to leave the solar system as long as we develop new ways to capute the sun energy. But…the question is – what we gonna find on those planets? When you think about it – we have emitted radio waves for decades and capturing such as well – so if there was intelligent life on those planets – we will be able to get their signals at least. Also…if they were so advanced – they will easily notice our earth and arrive here with their flying saucers…so i guess these planets don’t host intelligent life – but likely liquid water and likely – some viruses, monsters or something like that? It could be a good tourism site and a diamond mine in the future at least…i guess. what do you think??
Unfortunately you have been reading newspapers and not scientific journals.
Gliese 581d and Gliese 370b are both “Super Earths” and lie in the “habitable zone or goldilocks zone”. Unfortunately, this term has been taken to mean having life, whereas in fact it is nothing more than the distance from the star where liquid water maybe found and NOT “may host life”.
The definition of the “Goldilocks zone” or “Habitable Zone” from Wikipedia [See Source] is “a region of space where stellar conditions are favourable for life as it is found on Earth”.
The habitable zone is not to be confused with the planetary habitability.
The term is derived from the fairy story of Goldilocks and the three bears, where she tries the beds, chairs and porridge and finds only one “Just right”.
Some people interpret this as meaning “the only zone (conditions) where life can be found” but this is too limiting. Life forms based on silicon, other chemical reactions etc. may have entirely different Goldilocks Zones. ^
Even on Earth life exists outside of what many users of the term would consider habitable. Animals have been found living in the near boiling waters of hot springs, in deep below freezing waters under the Antarctic ice cap, at the -60oC temperatures of the Antarctic surface, without light in caves, in waters with high concentrations of sulphuric acid, and in the deep sea near “black smokers” or volcanic vents,
on: 16th December 11