Im not sure that they have discovered several thousand planets that could support life.... yet. From what I understand, they are indeed finding quite a few (several hundred) planets that are within the "habitable zone".
There was a recent report from NASA that estimated the amount of planets in our galaxy, The Milky Way, at 50 billion. Of those 50 billion they said 500 million could be in the "sweet spot" to support life. Amazing if accurate.
Here's the link to that article: Milky Way home to 50 billion planets: NASA
Given the vastness of the universe, one has to think there must be SOMETHING out there. Either that or we are alone in a very profound sense of the word.
Agreed. From the same article: "Scientists estimate there are 100 billion galaxies."
Boggles the mind. If our galaxy has 50 billion planets, and there are 100 billion galaxies...well get out the calculator. And our galaxy is considered relatively small, no? With evidence of the building blocks of life flying around on asteroids, and possibly billions of planets that could support life in the universe...indeed it is difficult to imagine we are alone in this universe.
And...welcome to the forum, Glander.