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Alpha Regio
Alpha Regio 3D.jpg
A portion of Alpha Regio is displayed in this three-dimensional perspective view of the surface of Venus.
Feature type Regio
Coordinates 22°S 5°E / 22°S 5°E / -22; 5Coordinates: 22°S 5°E / 22°S 5°E / -22; 5
Diameter 1500 km

Alpha Regio is a region of the planet Venus extending for about 1500 kilometers centered at 22°S, 5°E.

It was discovered and named by Dick Goldstein in 1964.[1] The name was approved by the International Astronomical Union's Working Group for Planetary System Nomenclature (IAU/WGPSN) between 1976 and 1979.[2] Maxwell Montes, Alpha Regio, and Beta Regio are the three exceptions to the rule that the surface features of Venus are to be named for females: women or goddesses.

The surface of the region is what is known as Tessera, meaning a terrain that has been highly deformed and where the deformation strikes in multiple directions and is closely spaced. The term comes from the Greek word for “tiled” (Russian investigators analyzing Venera 15 and Venera 16 imagery thought this terrain looked like a parquet floor). Like all tessera regions, it sits above the surrounding terrain at an elevation of 1 to 2 kilometers, and is heavily deformed by what appears to be contractional folding. Like most tessera units, the surrounding volcanic plains appear to have flowed around Alpha's margins and thus are younger than Alpha.

An infrared map prepared by the Venus Express orbiter shows that the rocks on the Alpha Regio plateau is lighter in colour and look old compared to the majority of the planet. On Earth, such light-coloured rocks are usually granite and form continents.[3]

See also[edit]

References[edit]

  1. ^ Butrica, Andrew J., SP-4218 To See the Unseen, Chapter 5: Normal Science, NASA, 1996
  2. ^ Butrica, Andrew J., SP-4218 To See the Unseen, Chapter 6: Pioneering on Venus and Mars, NASA, 1996
  3. ^ New map hints at Venus' wet, volcanic past | International Space Fellowship

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Alpha_Regio — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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30 news items

Aktuality.sk

Aktuality.sk
Wed, 18 Mar 2015 21:00:21 -0700

Najzaujímavejšie sa nachádzajú okolo krátera Stuart na východe oblasti Alpha Regio. Radar tiež odhalil na vysočinách viaceré ložiská sedimentov. Skúmanie vysočín Venuše, označovaných ako tesserae, môže priniesť poznatky o rozrôznení kôry tejto ...

Zazoom Blog

Zazoom Blog
Tue, 10 Mar 2015 00:52:30 -0700

Of particular interest is an ejecta deposit from Stuart crater that we infer to mantle much of eastern Alpha Regio. Some radar-dark tessera occurrences may indicate sediments that are trapped for longer periods than in the plains. We suggest that such ...

RedOrbit

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Mon, 23 Jun 2014 04:31:50 -0700

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Tue, 14 Jan 2014 04:50:42 -0800

The surface of Venus is totally hostile to Earth life, a dim, hot furnace, with temperatures well over 400°C. But conditions are different at the Venus cloud tops. Temperatures are ideal, with plenty of light. The atmosphere is out of equilibrium, with ...
 
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Space.com
Tue, 14 Jul 2009 04:32:05 -0700

The new map shows that the rocks on the Phoebe and Alpha Regio plateaus are lighter in color and look old compared to the majority of the planet. On Earth, such light-colored rocks are usually granite and form continents. Granite is formed when ancient ...
 
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