the observation and study of the planet Mars.

a periodic irregularity in the moon's motion, caused by the attraction of the sun.

pertaining to the rising of the Dog Star (also called Sirius) or to the star itself.

the point at which the stars of a binary system are farthest apart.

with great care or caution; warily.

a person or thing that has become renewed or restored after suffering calamity.

a heavy mist or drizzle that occurs in the Congo Basin, located in Central Africa, often accompanied by onshore winds.

to become converted into soap.

bright with joy, hope, etc.

pollination of a flower by pollen from another flower on the same plant.