Kalahari Desert activities within the reserve. Botswana Namibia South Africa Kalahari Desert The Kalahari Desert is a large semi-arid sandy savanna in Southern Africa extending for , covering much of Botswana, parts of Namibia and regions of South Africa. "Kalahari" is derived from the Tswana word "Kgala", meaning "the great thirst", or "Kgalagadi", meaning "a waterless place"; the Kalahari has vast areas covered by red sand without any permanent surface water. Drainage of the desert is by dry valleys, seasonally inundated pans and the large salt pans of the Makgadikgadi Pan in Botswana and Etosha Pan in Namibia. The only permanent river,
PDS 70 PDS 70 PDS 70 (V1032 Centauri) is a low-mass T Tauri star in the constellation Centaurus. Located approximately 370 light-years from Earth, it has a mass of , and is approximately 10 million years old. The star has a protoplanetary disk containing a nascent exoplanet, named PDS 70b, which has been imaged, the first confirmed image of a newborn planet. The protoplanetary disk around PDS 70 was first hypothesized in 1992 and confirmed in 2006 along with a jet-like structure. The disk has a radius of approximately . In 2012 a large gap (~) in the disk was discovered, which