very clearly. Perihelion is the point nearest the sun in the orbit of a planet. When Mars is at its perihelion it can b e viewed very clearly because Earth is between Mars and the sun. See also Mars in this glossary.—HEV Approved Glossary
PERIHELION, LIKE MARS AT
ScnTUEU
very clearly. Perihelion is the point nearest the sun in the orbit of a planet. When Mars is at its perihelion it can be viewed very clearly because Earth is between Mars and the sun. See also Mars in this glossary.