Space–time is a mathematical model that joins space and time into a single idea called a continuum. This four-dimensional continuum is known as Minkowski space. Combining these two ideas helped […]

  The Alpha Centauri system is the closest star system to our sun. it is 4.37 light-years (1.34 pc) from the Sun. Light Years :- a unit of astronomical distance […]

Augmented reality (AR) refers to * a simple combination of real and virtual (computer-generated) worlds. Given a real subject, captured on video or camera, the technology ‘augments’ (= adds to) […]

An unidentified flying object, or UFO, refers to * any apparent object in the sky that is not identifiable as a known object or phenomenon. * refers to a suspected […]

A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it. The theory of […]