A SpaceX Falcon 9 launch left a rare high altitude noctilucent cloud glowing before sunrise, sparking awe and confusion across Florida.

Scientists created half-Möbius molecules, similar to the Möbius strips common in math classes, but half as twisty. It’s a type of topology, or geometrical structure, that is new to molecules, ...

So far, Fillion has posted videos with Firefly co-stars Gina Torres (who played Mal's second-in-command Zoë Washburne), Morena Baccarin (Inara Serra), Sean Maher (Dr. Simon Tam), Summer Glau (River ...

When the densest objects in the universe collide and merge, the violence sets off ripples, in the form of gravitational waves ...

A mysterious striped signal from the Crab Pulsar may finally be explained by a delicate balance between plasma effects and gravitational lensing.