Device that moves so as to aim a collector of solar energy at the sun as it crosses the sky

Alternative letter-case form of Solar System

Any engine that converts energy from the sun into electrical or mechanical energy; especially such an engine used for the propulsion of a spacecraft.

plural of solar system

A pith helmet.

(astronomy) one day of solar time, the time between successive noons; the time in which a planet such as Earth apparently rotates once around its axis, relative to the sun (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year)

(astronomy) A violent explosion in the Sun's atmosphere.

(anatomy) A complex network of nerves and ganglia, located within the abdomen behind the stomach.

(astronomy) The outflow of charged particles from the solar corona into space. Because of the high temperature of the particles of the corona, they are moving at speeds higher than the solar escape velocity.

(astronomy) The local time based on a solar day - the mean time between successive noons.