SpaceX CEO Elon Musk explained why he thinks asteroid could hit Earth at any time and that he wants humanity to find a 'second planet' ...

The megaphone-shaped spacecraft, called SPHEREx — short for Spectro-Photometer for the History of the Universe, Epoch of ...

Transgender, nonbinary, and intersex people exist," argues one letter. Another: "We should be humbled by the gaps in our ...