Redshift and blueshift are used by astronomers to work out how far an object is from Earth. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Light that escapes collapsing stars and dust clouds may sport an unusually blue hue. Light emitted within these gravitationally unstable objects can get compressed and thus become bluer, physicists ...

Redshift Blueshift is a tournament-ready pong-like 2D shooter in which two pilots fight for glory in their variable paddle ships! Power up your shields, unleash a horde of drones and homing missiles ...