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…
The Antiproton Decelerator is a storage ring at the CERN laboratory near Geneva. It was built as a successor to the Low Energy Antiproton Ring…
The first automatic partially reusable spacecraft was the Buran-class shuttle, launched by the USSR on November 15, 1988, although it made only one flight and…
While the consensus among physicists is that gravity will attract both matter and antimatter at the same rate that matter attracts matter, there is a…
The Hubble classification system rates elliptical galaxies on the basis of their ellipticity, ranging from E0, being nearly spherical, up to E7, which is highly…
In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites…
