Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
Check out the new SourceForge HTML5 internet speed test! No Flash necessary and runs on all devices. ×
Space

Submission + - Evidence for 200-Year-Old Comet Impact on Neptune (discovery.com)

astroengine writes: "Astronomers using ESA's Herschel space observatory have spotted evidence of a cometary impact in Neptune's upper atmosphere. Whereas impact craters on rocky planetary bodies can remain for billions of years, an impact in the dynamic atmospheres of gas giants aren't obvious, especially if long periods of time have elapsed. This ultimate 'cold case' tracked the unusual distribution of carbon monoxide in Neptune's stratosphere, a sure sign it was deposited there by an external source. Once they realized they were looking at a comet impact, researchers were able to deduce when the impact occurred: 200 years ago."
This discussion was created for logged-in users only, but now has been archived. No new comments can be posted.

Evidence for 200-Year-Old Comet Impact on Neptune

Comments Filter:

"There is nothing new under the sun, but there are lots of old things we don't know yet." -Ambrose Bierce

Working...