Earth 2.0 could be just 4.4 light-years away Watch
A study shows that 22% of G and K-type stars could have Earth-like planets orbiting in the habitable zone.
There are 9 Sun-like stars within 25 light-years. If we make the calculation, two of those stars could have an Earth-like planet.
One of those two exoplanets could be Tau Ceti e. Which exoplanet could be the other one?
7 out of the 9 closest Sun-like stars have low metallicity. The only two stars with high metallicity are Alpha Centauri A and Delta Pavonis, but this star is suspected to be variable.
What do you guys think?
With 1700 k, g and f type stars within 100 light years it is likely that life exists on several worlds. When you add in the red dwarfs and moons which may be habitable in parts but are unlikely to have produced life then our interstellar discoveries this century are significant.
On current pace there is a chance that fusion could get a probe to the Cenuari system around the end off the century (assuming ITER works and can be made smaller). That probe would take about 40 years to arrive though since fusion could only get to about 10% of light speed.
If we wait for fusion which looks feasible mid-century and assume we can make a version small enough then we can get about 10% of the speed of light which would be a little over 40.
Because we can identify planets and send communications far faster it's likely we will be telling aliens to come here long before we have the ability to go on our jollies any further than the moon's of Saturn.