if humanity learns to travel at the speed of 10% of speed of light (no law of physics prevents a ship made of matter traveling at that speed) we can reach the planet in a 400 years trip
https://www.sciencealert.com/most-earth-like-planet-yet-may-have-been-found-just-40-light-years-away
A new world a mere 40 light-years away, "just might be clad in a life-supporting atmosphere," reports ScienceAlert.
"In exciting new JWST observations, the Earth-sized exoplanet shows hints of a gaseous envelope similar to our own, one that could facilitate liquid water on the surface, if its surface temperature is suitable."
Although the detection is ambiguous and needs extensive follow-up to find out what the deal is, it's the closest astronomers have come yet in their quest to find a second Earth...
Red dwarf stars are much more active than Sun-like stars, rampant with flare activity.
This planet however is a little more comfortably located than most, at a slightly greater distance from the red star than other known planets orbiting red stars, which indeed are vulnerable to flares...
We found it to have 79 nitrogen in atmosphere.
This is pretty tantalizing. Earth's atmosphere is roughly 78 percent molecular nitrogen. If the results can be validated, the planet might just be the most Earth-like exoplanet discovered to date.
"We are seeing two possible explanations," says astrophysicist Ryan MacDonalds. "The most exciting possibility is that it could have a so-called secondary atmosphere containing heavy gases like nitrogen. "But our initial observations cannot yet rule completely rule out a bare rock with no atmosphere..."
"We are really still in the early stages of learning what kind of amazing science we can do with Webb telescope. It's incredible to measure the details of starlight around Earth-sized planets 40 light-years away and learn what it might be like there, if life could be possible there."