Many of them shoot out beams of high-speed particles in opposite directions, which appear to radio telescopes as 'jets' of emission.

Since Gauss's day, measurements have shown the magnetic field, which deflects high-speed particles from the sun, quickly weakening, 5 percent per century.

Micrometeorites are tiny high-speed particles found in high concentrations at certain altitudes.

The green light comes from oxygen set aglow by a powerful stream of high-speed particles ejected by a massive star just outside the image.

The theory has influenced all branches of physics dealing with electromagnetic radiation and high-speed particles.

The americium in the smoke detector is emitting high-speed alpha particles (helium nuclei).

Relative to the high-speed particle, distances seem to shorten.

Astrophysicists had thought that the termination shock boundary provided the kick for certain high-speed particles seen in the inner solar system.

An atom smasher uses high-speed particles to bombard a target and cause artificial radioactivity.

Radiation is energy that travels in the form of waves or high-speed particles.