Welcome to Astronomy & Telescope Astronomy

 
 

  Modules

· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· FAQ
· Feedback
· Forums
· Journal
· Members List
· Private Messages
· Recommend Us
· Reviews
· Search
· Statistics
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account
 

  Who's Online

There are currently, 10 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here
 

  Search



 

  Languages

Select Interface Language:

 

  Random Headlines


Telescope Mount
[ Telescope Mount ]

·Astronomy: Telescope Mount - MOTOR DRIVES
·Astronomy: Telescope Mount - Equatorial-ONE OR TWO MOTIONS
·Astronomy: Telescope Mount - Altazimuth Mount-WHICH MOUNT
·Astronomy: Telescope Mount - Aligned-GETTING ALIGNED
·Astronomy: Telescope Mount - CHOOSING A TELESCOPE MOUNT
 

 
  Venus: Astronomy: Venus - THE LAVA PLANET
Posted on Saturday, December 11 @ 01:34:45 CST by astronomy
 
 
  Venus

THE LAVA PLANET

To peel away the clouds and map Venus's geological fea-tures, scientists used an imaging radar on a spacecraft named Magellan. Building on work by US and Soviet probes and Earth-based radar, Magellan inventoried a museum of volcanic features, completing its global survey in 1994.



Sixty percent of Venus's surface is a lava plain. The rest falls mainly into two continents: an equatorial one named Aphrodite Terra, and a northern one called Ishtar Terra. These stand a few miles higher than the plains. The remainder of the surface consists of individual mountains and broad-based volcanic peaks.

On the plain, Magellan revealed long channels that mark past lava flows, and found fissures and vents from which vast sheets of lava once poured, often in repeated eruptions. Scientists identified pancake-like lava domes, and found strange oval features called coronae that have no counterpart on Mercury, Earth, or Mars. The coronae may have formed when a rising blob of molten rock pushed up the surface, and subsided, leaving a distorted ring around a central depression.

 
 
  Login

Nickname

Password

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.
 

  Related Links

· More about Venus
· News by astronomy


Most read story about Venus:
Astronomy: Venus - GREENHOUSE EFFECT

 

  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad

 

  Options


 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend

 

 
 
Associated Topics

Venus
 
 


 
 
"Login" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.
 
 


 
 
No Comments Allowed for Anonymous, please register
 
 


 
  Astronomy & Telescope Astronomy

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2004 by Astronomy & Telescope Astronomy
You can syndicate our news using the file backend.php or ultramode.txt