P3E1R1I1H4E1L1I1O1N1
15 points
PERIHELION is validvalid
[n PERIHELIA]
the point of the orbit of a planet or a comet at which it is nearest to the sun, as opposed to aphelion [n PERIHELIA]
[n PERIHELIA]
the point of the orbit of a planet or a comet at which it is nearest to the sun, as opposed to aphelion [n PERIHELIA]