SIGNS of an alien planet that’s about the same size as Earth have been picked by up a Nasa telescope. Scientists say it might even be within its host star’s “habitable zone”, but there’s a big problem ...

Scientists have discovered a 'super–Earth' planet less than 20 light–years away, and it could have the right conditions for alien life. The exoplanet, dubbed GJ 251 c, is at least four times larger ...

Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of ...

Earth may be the only planet in the universe that we know to support life. However, astronomers have identified several alien exoplanets that could have even better environments, making them ...

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What sounds like the plot of a sci-fi movie may actually have revealed remnants of the planet that collided with Earth billions of years ago to produce the Moon. Two continent-sized clumps of rock ...