Winds on Venus have accelerated

2013-06-19 09:02
This photo shows the transit of Venus, which occurs when the planet Venus passes between the Earth and the Sun, as pictured in Hong Kong. (Vincent Yu, AP)

This photo shows the transit of Venus, which occurs when the planet Venus passes between the Earth and the Sun, as pictured in Hong Kong. (Vincent Yu, AP)

Multimedia   ·   User Galleries   ·   News in Pictures Send us your pictures  ·  Send us your stories

Paris – Already travelling at super-hurricane speeds, winds on Venus have accelerated by an astonishing one-third over the past six years, the European Space Agency (ESA) reported on Tuesday.

Separate teams of astronomers analysed images from ESA's Venus Express orbiter, monitoring cloud patterns on our closest neighbour.

When Venus Express started operations in 2006, high-altitude winds between latitudes 50 degrees either side of the equator were recorded at about 300km/h on average, they found.

These winds have progressively increased and now are running at almost 400km/h.

The probe was carried out by a team led by Igor Khatuntsev from the Space Research Institute in Moscow and another led by Toru Kouyama of Japan's National Institute of Advanced Industrial Science and Technology.

Just a fraction smaller than Earth, Venus was once touted as a sister planet to ours and, in early science fiction, was portrayed as a potential home from home.

But in 1970, it was found to host an atmosphere of carbon dioxide with a pressure 90 times that on Earth and a surface cooked to 457°C, possibly the result of runaway global warming.

Its wind system is a yellowish brew of toxic gases that reach their highest speed at the altitude of the cloud tops, some 70km above the scorching volcanic plains.

These winds are especially intriguing because they are "super-rotating," meaning that they travel dozens of times faster than the planet's spin.

The rotation of Venus is agonisingly slow – it takes the equivalent of 243 Earth days to complete a single Venusian day.

Further work is needed to explain the bizarre increase in wind speeds, and whether this phenomenon is long-lasting.

"This is an enormous increase in the already high wind speeds known in the atmosphere," ESA quoted Khatuntsev as saying.

"Such a large variation has never before been known on Venus, and we do not yet understand why this occurred."

Read more on:    astronomy

Join the conversation! encourages commentary submitted via MyNews24. Contributions of 200 words or more will be considered for publication.

We reserve editorial discretion to decide what will be published.
Read our comments policy for guidelines on contributions.
NEXT ON NEWS24X publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.

Comment on this story
Comments have been closed for this article.

Inside News24

Traffic Alerts
There are new stories on the homepage. Click here to see them.


Create Profile

Creating your profile will enable you to submit photos and stories to get published on News24.

Please provide a username for your profile page:

This username must be unique, cannot be edited and will be used in the URL to your profile page across the entire network.


Location Settings

News24 allows you to edit the display of certain components based on a location. If you wish to personalise the page based on your preferences, please select a location for each component and click "Submit" in order for the changes to take affect.

Facebook Sign-In

Hi News addict,

Join the News24 Community to be involved in breaking the news.

Log in with Facebook to comment and personalise news, weather and listings.