A runaway star is one that is moving through space with an abnormally high velocity relative to the surrounding interstellar medium. The proper motion of…
The Falcon 1 was an expendable launch system privately developed and manufactured by SpaceX during 2006–2009. On 28 September 2008, Falcon 1 became the first…
The Space Shuttle was a partially reusable human spaceflight vehicle capable of reaching low Earth orbit, commissioned and operated by the U.S. National Aeronautics and…
At the surface such a body is enveloped in a shell of relatively cool matter. Now suppose a great attracting body, such as another sun,…
On 29 September 2017, Elon Musk announced an updated vehicle design for the Mars mission at the International Astronautical Congress. The replacement vehicle for this…
Rocks are named after the children or family members of astronauts or NASA employees. The name “Jazzy”, for example, was taken from a girl named…
Originally introduced by Sir Isaac Newton in Philosophiæ Naturalis Principia Mathematica, the concepts of absolute time and space provided a theoretical foundation that facilitated Newtonian…
According to the theory of relativity, time dilation is a difference in the elapsed time measured by two observers, either due to a velocity difference…
