doppler effect

Astronomers found the exoplanet Proxima c orbiting the red dwarf Proxima Centauri, only 4.2 light-years from Earth.

State-of-the-art technology can send people to the moon and satellites to the edge of the Solar System. But these distances are nothing to the vast interstellar space

A very silly question about an obvious fact, though not everyone knows about it.

A group of researchers around the world include groups operating radio signal receiving stations and a group of scientists at Massachussets University of Technology (MIT) gathering

Radar can appear in a variety of devices including mobile phones thanks to the invention of small chips with fingernails for just over a dollar.

British engineers at University College London have studied a passive radar system that allows them to see through walls using Wi-Fi signals generated by wireless routers and