An outcrop view of a metaconglomerate: 1  Shale is a sedimentary term. 2  Slate refers to a fine-grained, low-grade metasedimentary rock in which bedding is typically still visible: 3  Schist refers to a medium-to high-grade, medium-to coarse-grained metamorphic rock of any composition that has a fabric.
Total solar irradiance (TSI), is a measure of the solar radiative power per unit area normal to the rays, incident on the Earth's upper atmosphere. The solar constant is a conventional measure of mean TSI at a distance of one Astronomical Unit (AU).
The fact that magnetic reconnection can occur within Venusâ magnetotail suggests auroras are the cause of the light that scientists have observed emitting from this planet. Saturn Saturnâs auroras occur near the planetâs poles, much like they do on Earth