For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Most solar companies set the price according to the solar system's wattage. A solar installation's “cost per watt” is a little like the “price per square foot” when you buy a house.

Most moons follow more circular orbits and travel on more or less the same plane as the rest of the solar system. These moons, by contrast, have highly elliptical orbits and are inclined at odd angles ...

About the crash: All 67 people on the aircraft — 64 on the American Airlines plane and three in the Blackhawk helicopter — died in the January 29 collision. It was the deadliest aviation ...

The spaceplane was put into a highly elliptical orbit ... It is powered by gallium arsenide-based solar cells and lithium-ion batteries, and has demonstrated the ability to remain in orbit ...

501, I SAW THIS PLANE COME DOWN AT AN ANGLE AND AS IT HIT, THE BIG FIREBALL SHOT UP AS HIGH AS THE AS HIGH AS THE BUILDING. AND THEN BLACK SMOKE AND FIRE ALL OVER THE PLACE. THIS MORNING ...

According to the NTSB report, the plane also had an Enhanced Ground Proximity Warning System. The agency says the EGPWS computer is being evaluated by its manufacturer to see if any travel data ...

Plane toilets store human waste in special tanks and use a vacuum system for flushing. These are normally disposed of once the plane has landed. While clogged toilets are not uncommon, it is "next ...

The plane went down near a retirement village in Lancaster, Pennsylvania. A Beechcraft Bonanza crashed in Pennsylvania on Sunday afternoon with five people aboard, according to the Federal ...

The Qantas plane was traveling from Brisbane to Sydney in Australia when the incident occurred on Monday, March 10 Gabrielle Rockson is a staff writer-reporter for PEOPLE. She joined PEOPLE in ...

Airspace over President Trump's Florida estate is restricted NORAD continues to intercept aircraft in the area, officials said The latest incident was Sunday afternoon Airspace over President ...