Sun like Tau Ceti 12 light years from earth seems to have earth like planet

Originally posted by Phage
reply to post by 0pass

 

I am not talking about detection of existence of exoplanets but that they are could be like earth.

All that can be known is how far from the star the planet is and how massive it is. It is not possible to know if there is an atmosphere or water on these planets.

Actually, it is possible to detect an atmosphere, and even study some of its properties or changes it goes through. An exoplanet's atmosphere can be detected by studying the star's light when an exoplanet transits it. An atmosphere causes polarisation, as well as producing absorption spectral lines.

www.astrobio.net...
www.space.com...
seagerexoplanets.mit.edu...

reply to post by wildespace

Not so much for "earthlike" planets.

Originally posted by Phage
reply to post by wildespace

 

Not so much for "earthlike" planets.

Yeah, not possible with current observatories.
But next-gen tech is coming really close to being able to study this variables on planets smaller than Gas giants.
'Tis an age of wonder indeed.