A newly found super-Earth could help provide answers as to why there are hardly any planets twice the diameter of Earth.

Auroras are possible over the U.S. tonight (March 25) as a "moderate" geomagnetic storm hits Earth. UPDATE: The Northern ...

The pair waved and smiled as they emerged from the SpaceX Dragon, which splashed down off the coast of Florida.

Totality lasts for a little over an hour before the moon begins to emerge ... by our planet is filtered through a thick slice of Earth’s atmosphere on its way to the lunar surface," NASA ...

Compare that to Earth, where the mass-fraction of water is just 0.02%. Yet if TOI-152b had been reduced by stellar radiation, there would be no water or atmosphere left at all. Instead ...