Mission control to astronauts: ‘Thank you for flying SpaceX’ as NASA astronauts make first splashdown in 45 years.

The spacecraft is set to undock from the ISS around 8 pm ET on Saturday, August 1, with plans for its official splashdown in the Atlantic Ocean the next day Sunday, August 2, around 3 pm.

The Hubble Space Telescope was launched in 1990 and remains one of the largest and most versatile telescopes that scientists have ever deployed for studying the cosmos.

Unlike the two space planes discussed in previous parts of this series, the Sierra Nevada Space Systems

When discussing SpaceShipTwo, one really must also discuss WhiteKnightTwo, the mothership which carries SpaceShipTwo before its ascent into space.

The XCOR Aerospace Lynx was a space plane developed by XCOR beginning in 2003 under the original project name “Xerus.”

When does an aircraft become a spacecraft? This was once a subject of significant debate until a clear line of demarcation was established at an altitude of approximately 100 km (60 mi) above sea level.

On July 6, 1687, Sir Isaac Newton published his Philosophiæ Naturalis Principia Mathematica.

On June 30, 1971, three Soviet cosmonauts died while reentering the Earth’s atmosphere after a successful docking and prolonged stay onboard the world’s first space station, Salyut 1.