Featured Research

from universities, journals, and other organizations

NASA Probe Could Reveal Comet Life, Scientists Claim

Date:
July 3, 2005
Source:
Cardiff University
Summary:
Scientists at Cardiff University, UK, believe a NASA mission could reveal living matter in the icy layers beneath the surface of a comet. NASA's Deep Impact spacecraft will make a historic encounter with Comet Tempel-1 on 4th July, when a metre-long projectile will crash into the comet and tunnel through its outer layers, producing a crater and a plume of gas and dust.

Cardiff (UK) scientists are playing a major role in a NASA mission, which they believe could reveal living matter in the icy layers beneath the surface of a comet.

Related Articles


NASA's Deep Impact spacecraft will make a historic encounter with Comet Tempel-1 on 4th July, when a metre-long projectile will crash into the comet and tunnel through its outer layers, producing a crater and a plume of gas and dust.

UK astronomers involved in monitoring the comet before, during and after the impact and interpreting the results include Cardiff University's Professor Chandra Wickramasinghe and Dr Max Wallis at the Cardiff Centre for Astrobiology. They will conduct their study through instruments on the mother spacecraft.

The Cardiff scientists predict that Deep Impact will verify their theory that the outer crust of the comet will consist of asphalt-like material with permafrost beneath. The small icy fragments blasted out by the impact will include organic matter, they suggest.

The mainly copper projectile will hit the comet at 25,000 miles per hour and will penetrate 15-20 metres into the surface before exploding. The comet will remain intact despite losing a huge amount of material -- 100,000 tonnes from a 100 metre diameter crater, and the impact is not expected to alter the comet's orbit.

"Not only is Deep Impact a spectacular experiment, it is also a test for our long-standing arguments," added Professor Wickramasinghe. "It will show, we believe, that a comet is not a rubble pile, nor a conglomerate of ices, but a porous mass of organics and ice under the black asphalt crust."

Comets are thought to have accumulated from a mixture of ices and organic interstellar dust at the time the solar system was formed some 4.6 billion years ago.

"This material is quite porous, so it is daring again to predict that subsurface ponds or lakes form transiently due to heat penetrating the exterior crust. We can thus expect biology on comets to have similarities with antarctic biology," added Professor Wickramasinghe.


Story Source:

The above story is based on materials provided by Cardiff University. Note: Materials may be edited for content and length.


Cite This Page:

Cardiff University. "NASA Probe Could Reveal Comet Life, Scientists Claim." ScienceDaily. ScienceDaily, 3 July 2005. <www.sciencedaily.com/releases/2005/07/050702215050.htm>.
Cardiff University. (2005, July 3). NASA Probe Could Reveal Comet Life, Scientists Claim. ScienceDaily. Retrieved March 27, 2015 from www.sciencedaily.com/releases/2005/07/050702215050.htm
Cardiff University. "NASA Probe Could Reveal Comet Life, Scientists Claim." ScienceDaily. www.sciencedaily.com/releases/2005/07/050702215050.htm (accessed March 27, 2015).

Share This


More From ScienceDaily



More Space & Time News

Friday, March 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Why So Many People Think NASA's Asteroid Mission Is A Waste

Why So Many People Think NASA's Asteroid Mission Is A Waste

Newsy (Mar. 27, 2015) The Asteroid Retrieval Mission announced this week bears little resemblance to its grand beginnings. Even NASA scientists are asking, "Why bother?" Video provided by Newsy
Powered by NewsLook.com
Supermassive Blackhole Detector Ready for Business

Supermassive Blackhole Detector Ready for Business

Reuters - Innovations Video Online (Mar. 25, 2015) Construction of the world&apos;s largest and most powerful observatory designed to detect and analyze gamma rays has been completed in Mexico. Gamma ray particles are considered the most energetic in the universe and scientists hope to use the observatory to learn more about the supernovas and black holes that produce them. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Rocket Blasts Off Carrying U.S. Air Force GPS Satellite

Rocket Blasts Off Carrying U.S. Air Force GPS Satellite

Reuters - News Video Online (Mar. 25, 2015) A U.S. Air Force GPS IIF-9 satellite launches aboard a United Launch Alliance Delta IV rocket into semi-synchronous orbit. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Opportunity's Marathon: The Mars Rover Just Keeps Going

Opportunity's Marathon: The Mars Rover Just Keeps Going

Newsy (Mar. 24, 2015) NASA&apos;s Opportunity Mars Rover finished a full marathon, making it the first human creation to do a full 26.2 miles on another planet. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins