‘Double Earths’ Could Be Fun Exoplanets To Hunt For — If They Exist

Artist's conception of binary Earths. Credit: NASA

Artist’s conception of binary Earths. Credit: NASA

One big driver in the search for exoplanets is whether life can exist elsewhere in the Universe. In fact, a major goal of the Kepler space telescope is to discover an Earth-like planet in the habitable zone of a star like our Sun.

But what about having two Earths orbiting close to each other for billions of years? Is this even possible? A new study suggests that yes, this could happen. Imagine the implications for planetary searches if a double Earth is possible.

With current technology it’s hard to spot an Earth-sized planet, let alone resolve two, but if such planets exist it presents interesting questions. Could they be habitable? How do they form? More study is needed.

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Read the rest of ‘Double Earths’ Could Be Fun Exoplanets To Hunt For — If They Exist (297 words)


© Elizabeth Howell for Universe Today, 2014. |
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