We typically think of the Oort cloud as scattered ice balls floating far from the sun, yet still tied to it gravitationally.

A routine planetarium show at New York’s Hayden Planetarium just triggered a potentially historic discovery in astrophysics. While curating scenes for “Encounters in the Milky Way,” a team of ...

It's not every day you get to watch a rocket launch into a sky glowing with colorful auroras — and it's even rarer to see that rocket leave swirling clouds in its wake as part of a NASA science ...