Four educator astronauts carried on Christa McAuliffe's mission of venturing to space as a teacher, including two who revived her lost space lessons.

NASA's Space Shuttle Program, which ran from 1981 to 2011, was a complex and ambitious project that pushed the boundaries of ...

Candidates participating in the debate include Steve Hilton, Tom Steyer, Eric Swalwell, Tony Thurmond, Antonio Villaraigosa, ...

Such statements involve risks and uncertainties related to integrating or starting up new assets, the aluminum industry, the ...

President Donald Trump painted a simplistic picture for the US operation in Venezuela: go in, get the oil and start exporting ...