Archives: Glossary Terms: 691 terms

Periapsis in solar orbit.

Periapsis in Jupiter orbit.

Periapsis in lunar orbit.

To cause a planet or satellite to deviate from a theoretically regular orbital motion.

A particle of light composed of a minute quantity of electromagnetic energy.

The bright visible surface of the Sun.

Materials that convert light into electric current.

Petahertz (10 Hz).

JPL's Public Information Office.

A large planet or planetary body that does not orbit a star. Planemos instead wander cold and alone through the ...