Quick Silver
Source: This question is taken from the Everyday Science
sublimation
Cosmology
Niacin
Satellite
Entomology
Red Super-giants Star
Stellar nurseries
Metrology
Cryosphere
Saros Cycle
Northern lights
Ecology
Astronomy
Pulsar
Nicolas Copernicus
Calciferol
Psoriasis
Fissionable
57.9 million km
Exploration Extravehicular Mobility Unit (xEMU)
Gypsum salt
Epicenter
Volatile
atmosphere
Banyan
plasma
Seed coat, Testa
Karman line
Hair Loss
Leucocytes
Geo-morphology
Sedimentary rocks
Ichthyology
Black ice
Thiamine
Magnesium Sulfate
Maria, or seas, even though there is no water on the Moon
Pure-Conductor
Speleology
Both A and B
Phycology
21 June
Cataract
Both A & B
Converging lenses
Diverging Lens
Arboreal