Skew lines, the shortest distance between them, and its equation. Equations of a line and a plane in different forms, the intersection of a line and a plane, coplanar lines. Vectors and scalars ...

Swiss aviation pioneer Bertrand Piccard is developing a plane powered by liquid hydrogen after a much-hyped flight in 2015 ...

Efforts to determine what went wrong Friday night in a tragic plane crash in a Philadelphia neighborhood are only just beginning as officials start to examine plane parts and footage of the accident.

SAO PAULO (AP) — A small aircraft crashed on an avenue in Sao Paulo on Friday morning, killing at least two of its passengers, the local firefighter corps said in a statement. The plane went ...

NTSB investigators have found the cockpit voice recorder of the Learjet 55 that crashed Friday evening in Northeast Philadelphia. The device, often referred to as a “black box,” was found at a depth ...

Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

Swiss aviation pioneer Bertrand Piccard is developing a plane powered by green liquid hydrogen after a much-hyped flight in 2015 that used sunlight to travel around the world.

The US military has significantly increased its surveillance of Mexican drug cartels over the past two weeks, with sophisticated spy planes flying ... that could be given to the Mexican military ...

A small plane which crashed in western Alaska with 10 people on board has been found and the US Coast Guard (USCG) says there were no survivors. The Bering Air flight left Unalakleet at 2.38pm on ...

Sunrise photos and videos from Saturday morning show the heartbreaking aftermath of a deadly plane crash in Philadelphia. The medical plane was transporting a child, her mother and four crew ...

Andrew Griffith, a former Conservative minister, said the prime minister - who is heading to Brussels on Monday for talks with EU leaders - "should be rediverting his plane tomorrow" to Washington ...