Tsang, Constantine Southwest Research Institute, Boulder, Colorado.
- Transits of Venus
- Atmospheric composition
- Links to Primary Literature
- Additional Readings
The second planet in distance from the Sun. Venus has been called “Earth's twin” because it is similar to Earth in gross characteristics, such as mass, radius, and density (see table). In other ways, Venus is apparently different: Its atmospheric mass is almost a hundred times that of the Earth; its atmosphere is mostly carbon dioxide, rather than nitrogen and oxygen; an extensive cloud layer of concentrated sulfuric acid is present; its surface temperature is an unbearable 464°C (867°F); it rotates so that one Venusian day is equal to 243 Earth days and from east to west (clockwise as we look down from the north) in the opposite direction of most other planets. Some of these differences are due more to alternate evolutionary paths of the two planets than to totally different initial conditions.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Its dedicated editorial team is led by Sagan Award winner John Rennie. Contributors include more than 9000 highly qualified scientists and 42 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 17,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information