Sentence examples for an alien earth from inspiring English sources

Given Earth's distinctive colour, an interesting question is what colour an alien Earth orbiting another star might be.

Scientists hope the method can help them find an "alien Earth," a habitable planet much like our own, orbiting a distant star.

Astronomers have discovered an alien world that's more Earth-like in its size and composition than any ever found.

Though we won't be paying these alien Earths a visit anytime soon, we can begin the process of sorting through them and selecting the best candidates now.

[7 Ways to Find Alien Earths: An Exoplanet Countdown].

While it may seem natural to zero in on "alien Earths," such a narrow focus would exclude many potentially life-supporting exoplanets, whose diversity continues to astound astronomers, says Sara Seager of MIT.

But with over 2 billion potential alien earths out there, there has to be at least one backup for Earth, right?

Assuming a clear atmosphere that gives a view of the surface, these guys estimate the colour of alien Earths based on the percentage of surface covered in water, tree-like vegetation, bacterial mats, endoliths, which live inside rocks, and so on.

Today, the number of alien Earths stands at three Gliese 581d, HD 85512b and Gliese 667Cc.

But within the next few years, astronomers expect to find dozens of alien earths that are roughly the size of our planet.

If Gowanlock and co's predictions are anything to go by, in the very near future we're going to be finding many more alien Earths and that most of these will be tidally locked.