The shooting death of a Calgary-born astrophysicist in mid-February in front of his Southern California residence sent shockwaves through his academic and professional circles.

After several tests of unusual “nesting doll” satellites in low-Earth orbit, Russia is now fielding operational ...

This enigmatic orb has undergone extensive examination and DNA testing, enabling scientists to reveal its true origins ...

Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

The San Diego Zoo Wildlife Alliance is making trips to the zoo possible for pediatric patients and helping with their recovery.