Why don't we have neon-green ice giants? The Earth itself is so famously blue that its blue hue, viewed from the vantage ...

Sagan features quite heavily in my Pale Blue Dot article because his comments on the pale ... neighbor is Alpha Centauri, which is 6,000 light years away. So, a ship will take a very, very long time ...

It absorbed red and blue wavelengths but allowed the green light to pass ... One of the major implications of the study is that pale-green dot worlds viewed from space could be good candidate ...

Another ten billion light years deeper and further afield ... not unlike our Milky Way -- in which the Earth is but a Pale Blue Dot. The Milky Way itself is a medium-sized galaxy, with a mere ...