Sources
open directory project
Help build the largest human-edited directory on the web.
Submit a site - Become an editor
Wikipedia. Licensed under the GNU Free Documentation License.
Are you an expert in this subject? Join the discussion and share your knowledge at Wikipedia.org.
Arachnoid (astrogeology)
From Wikipedia, the free encyclopedia
In astrogeology, an arachnoid is a large structure of unknown origin, and they have been found only on the surface of the planet Venus. Arachnoids get their name from their resemblance to spider webs. They appear as concentric ovals surrounded by a complex network of fractures, and can span 200 kilometers. Over thirty arachnoids have been identified on Venus, so far. The arachnoid might be a strange relative to the volcano, but possibly different arachnoids are formed by different processes.
Original entry was from the Astronomy Picture of the Day; [1]
|
|
||
|---|---|---|
| Geography | Atmosphere · Geology · Terrae · Arachnoid · Baltis Vallis · Craters · Lakshmi Planum · Dune fields Volcanoes: Pancake dome · Scalloped margin dome Mountains on Venus:Abeona Mons · Anala Mons · Ciuacoatl Mons · Maat Mons · Maxwell Montes · Sapas Mons · Theia Mons Regions: Alpha Regio · Aphrodite Terra · Beta Regio · Ishtar Terra · Sedna Planitia Coronae: Artemis Corona · Nightingale Corona |
 |
| Exploration | Venus spacecraft · List of artificial objects on Venus · Venera program · Vega program · Pioneer Venus · Magellan | |
| Other | Venus-crosser asteroid · Colonization of Venus · Cytherean · Venus in fiction · Hesperus · Neith (hypothetical moon) · Phases of Venus · Terraforming of Venus · Transit of Venus · Venusian | |
This article incorporates text from a public-domain NASA website.
 |
This article about an extraterrestrial geological feature is a stub. You can help Wikipedia by expanding it. |