What we see, how poor we do see, what we know..

A dark alien world, blacker than coal, has been spotted by astronomers
They measured the amount of light coming from the planet's "night side" - when it is directly in front of its star. They compared that to the light coming from its "day side", just before it passes behind its star and Kepler sees it bathed in light.
The difference between the two gives a measure of how much light the planet reflects - or its albedo.
In our Solar System, clouds on Jupiter give it an albedo of 52%; Earth's is about 37%. But it appears that TrES-2b reflects less than 1% of its star's light.
"This albedo is darker than that of black acrylic paint or coal - it's weird," Dr Kipping told BBC News.
NASA/JPL-Caltech/G. Laughlin (UCO/Lick Observatory)