<div dir="ltr"><div>"Taking the paper’s most conservative lower bound, 7 per cent of the galaxy’s <a href="https://www.nytimes.com/2020/11/05/science/astronomy-exoplanets-kepler.html">estimated 4 billion sun-like stars</a> could have an Earth-like planet in the habitable zone. That translates to a population of <em>at least</em> <a href="https://exoplanets.nasa.gov/news/1664/about-half-of-sun-like-stars-could-host-rocky-potentially-habitable-planets/">300 million</a>
such planets in the Milky Way. With warp drive and a map, that’s a
potentially habitable planet for every 26 people in the world. (Indeed, 4
such planets could be within 30 light years of the sun, the closest
within 20 light years.)
<p>The key word here is <em>potentially</em>.</p>
<p>This may be our best guess at eta-Earth yet, but as all the
dependencies should make clear, it’ll likely be a moving target for
years to come. Though the calculation narrows the bands of uncertainty,
those bands are still quite wide. Perhaps the greatest contributor to
this is the fact researchers are extrapolating from a very small
population of planets."</p>
</div><div><a href="https://singularityhub.com/2020/11/08/there-could-be-300-million-or-more-earth-like-planets-in-our-galaxy/\">https://singularityhub.com/2020/11/08/there-could-be-300-million-or-more-earth-like-planets-in-our-galaxy/\</a></div></div>