Social Media Sidebar


Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.


Ray Kurzweil


More evidence that comets could have nurtured life on earth

Posted in Science on 5th May, 2016 05:33 PM by AlexMuller

Large-scale impacts usually result in mass extinctions instead of new life, but evidence is mounting that comet impacts at least had the potential to midwife along early life on Earth. A recent study published in Geochimica et Cosmochimica Acta found more evidence in the Sudbury Basin, an impact crater in Canada.


Researchers examined sediments deposited relatively soon after the impact, and found that increased carbon levels in the rocks soon after the impact were evidence that microbial life may have thrived in the crater after it smashed into the Earth.


Just to be clear, this doesn't mean that the Sudbury Basin is where life originated on Earth. For one thing, the crash happened just 1.8 billion years ago, long after life had already gotten it's start on Earth. But the research shows that comets could have provided oases on an early Earth, where conditions were perfect for life to form and thrive.
Previous research showed that extreme heat created by a comet or meteorite slamming into Earth, combined with an influx of seawater, was capable of creating hydrothermal vents, like the ones oceanographers see today on the seafloor. The intense heat of these systems, combined with the right kind of chemicals may have created the right conditions for life to form, while the bowl-like depression of the crater kept the water inside protected, allowing that life to thrive without being exposed to the harsh conditions of our nascent planet.
But wait, there's more. Computer simulations by other scientific groups have also reached the conclusion that comets could have helped create life on Earth, while studies by geochemists have shown that the chemicals carried by an icy comet are some of the key ingredients of life.
While there is no time machine that would allow researchers to journey back in time over 4 billion years and pinpoint the first life on Earth, studies like this, and ones of comets, like the current Rosetta mission, could help us peer back into our own origin story.

Tags: spacecometlifebiologyEarthresearch

Read original article » Back to category


Author: Guest
Posted: 2016-05-06
There could be many reasons why comets in some instances correlate with more life in areas where they landed - not really clear what is this all about Reply


Recent headlines

  • Posted in Science on 2017-10-22 04:22:31
    Blue Origin’s Breakthrough Means SpaceX Finally Has more
    Posted in Business on 2017-10-22 04:17:51
    Bitcoin boom prompts growth of coin-mining more
    Posted in Science on 2017-10-22 04:14:04
    MDMA Advances Another Step As Tool to Treat more
    Posted in Science on 2017-10-21 02:03:22
    Japan Just Discovered the Perfect Spot to Build a more
    Posted in Hardware on 2017-10-21 01:52:51
    Up to 200 pound pieces of China’s Space Station more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs, more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target more

Recent Blog Posts

  • Posted by AlexMuller
    Scientists probe Neptune's depths to reveal secrets of more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not more
    Posted by AlexMuller
    Artificial neural networks decode brain activity more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the more

Login to your Account

Login to your PlanetTech Account here

Remember me

Create a New Account

You just need username and password

The following errors occured:
Verify password:
Remember me