planet. In 2006, however, the concept was adopted by the International Astronomical Union (IAU) as a category of sub-planetary objects, part of a three-way...

The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below...

Royal Air Force's Bomber Command, he was elected a Fellow of the Royal Astronomical Society in 1945 and presented BBC Television's The Sky at Night programme...

form, portlandite, is relatively rare but can be found in some volcanic, plutonic, and metamorphic rocks. It has also been known to arise in burning coal...

igneous rocks and metamorphic rocks. Magnesian orthopyroxene occurs in plutonic rocks such as gabbro (norite) and diorite. It may form small idiomorphic...

present locally, such as the strombolian volcano Mont Ross, and the volcano-plutonic complex on the Rallier du Baty Peninsula. Various veins and extrusions...

of minerals within magmas, and they can be found in both volcanic and plutonic rocks. The law of included fragments is a method of relative dating in...

Thus, it seems probable that Mg-suite plutonic activity continued for a much longer time, and that younger plutonic rocks exist deep below the surface....

conglomerate. This formation contains spectacular megabreccia, volcanic and plutonic rocks up to 70 m (230 ft) across and metamorphic rocks of up to 500 m (1...

17.0 as U+1F777 🝷. The asteroid symbols were gradually retired from astronomical use after 1852, but the symbols for the first four asteroids were resurrected...