If our Moon suddenly vanished, Earth would already face dramatic consequences. But replacing it with entire alien worlds ...

News that a NASA scientist has announced fresh progress on Proxima b has pushed our nearest known exoplanet neighbor back into the spotlight, sharpening long-running questions about whether this rocky ...

In this issue: SpaceX's most recent launch, something unexpected about Mars, and scientific speculation on whether Proxima b might be habitable. Plus, some bonus ESO eye candy. Share on Facebook ...

The rocky planet circling the closest star to the sun got hammered by a superpowerful flare last year, a new study reports. That's a bit of bad news for anyone hoping that the alien world, known as ...

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