On the night of Tuesday, August 12, we reach the deepest, most concentrated part of that stream. This is when the Perseids ...

The second plenary speaker, Tsung-Han Tsai of the Gemological Institute of America (GIA), brought the audience back down to Earth with a look at how optics and optical instruments can be used to ...

CALIFORNIA — The four-person civilian Fram2 mission returned home in a splash down off the coast of California on Friday after being the first humans to orbit Earth's polar regions. Riding in ...