We recently saw research that suggested negative radiation pressure in light could lead to a practical tractor beam.

ENGADGET: Researchers build a working tractor beam, on a very small scale

Ordinarily, there should come a point where the pressure from all the radiation emitted by a stellar behemoth pushes back against any further infall of gas and dust.

BBC: Astronomers detect 'monster star'

Once the sun and planets took shape, heat became readily available in the form of solar radiation, asteroid impacts, and gravitational pressure.

ECONOMIST: Minerals

During the accumulation season, sublimation is reduced because of a low gradient of vapour pressure and the energy supplied by radiation is directly consumed by melting, explaining why discharge is high.

UNESCO: Dublin Core

Researchers using the car-sized mobile laboratory have identified transient whirlwinds, mapped winds in relation to slopes, tracked daily and seasonal changes in air pressure, and linked rhythmic changes in radiation to daily atmospheric changes.

ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans