Special update of STUPID HEADLINES!!!

Scientists find most Earth-like planet yet

And I quote,
“
European astronomers have spotted what they say is the most Earth-like planet yet outside our solar system, with balmy temperatures that could support water and, potentially, life. … This one is the first one that is at the same time probably rocky, with water. … We have estimated that the mean temperature of this super-Earth lies between 0 and 40 degrees Celsius. … ‘Because of its temperature and relative proximity, this planet will most probably be a very important target of the future space missions dedicated to the search for extra-terrestrial life’
“

And now the clincher

“
They have not directly seen the planet, orbiting a red dwarf star called Gliese 581. But measurements of the star suggest that a planet not much larger than the Earth is pulling on it
“

I don’t care what sort of observations they have made, there is no way to tell the temperature on one planet orbiting a sun just by watching it.