#Nasa #Alien – One of the Best Explanations For Why We Haven’t Found Alien Life : So far, the only examples of sentient life we’ve found are right here on our own planet. It’s not for lack of trying, though—we’ve sent out spacecraft deep into our solar system and, so far, still remain alone. What if the problem isn’t where we are looking, though, but when?
A forthcoming study in Journal of Cosmology and Astroparticle looks at the possibility that life as we know it may not require a star similar to our sun but could emerge on planets orbiting much smaller, weaker stars.
If we do allow for the possibility of life around non-sunlike stars, then it turns out that the universe is likely to be much more habitable in the distant future than it is today.
“It’s natural for us to think that we are the most common form of life, simply because that’s the only one that we know of,” lead author of the paper, Harvard University’s Avi Loeb, told Gizmodo. “Therefore, people assumed that being next to star like the sun was the most likely place for life to emerge.”
If you throw out the assumption that we need a sun-like star, though, then there’s a whole new class of stars—smaller and less powerful than the sun, but far more common—that suddenly start to look like good candidates. They’re called low mass stars.