Social Media Sidebar

Announcement

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

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

Could dark matter cause some mass extinctions?

RATE THIS! +24
Posted in Science on 21st Feb, 2015 05:31 PM by AlexMuller

In Earth’s path around and through our Galaxy’s disc, dark matter may perturb the orbits of comets and lead to additional heating in the Earth’s core, both of which could be connected with mass extinction events, according to a research finding by New York University Biology Professor Michael Rampino.

 
Writing in an open-access paper published today, Feb. 19, in Monthly Notices of the Royal Astronomical Society, Rampino notes that the Galactic disc is the region of the Milky Way galaxy where our solar system resides. It is crowded with stars and clouds of gas and dust, and also a concentration of elusive dark matter, hypothesized small subatomic particles that can be detected only by their gravitational effects.
 
Previous studies have shown that Earth rotates around the disc-shaped Galaxy once every 250 million years, with the Sun and planets weaving through the crowded disc approximately every 30 million years.
 
Analyzing the pattern of the Earth’s passes through the Galactic disc, Rampino notes that these disc passages seem to correlate with times of comet impacts and mass extinctions of life. The famous comet strike 66 million ago that led to the extinction of the dinosaurs is just one example.
 
While traveling through the disc, the dark matter concentrated there disturbs the pathways of comets typically orbiting far from the Earth in the outer Solar System, Rampino suggests. This means that comets that would normally travel at great distances from the Earth instead take unusual paths, causing some of them to collide with the planet.
 
But even more remarkably, with each dip through the disc, the dark matter can apparently accumulate within the Earth’s core. Eventually, the dark matter particles annihilate each other, producing considerable heat. The heat created by the annihilation of dark matter in Earth’s core, which also show peaks every 30 million years, could trigger events such as volcanic eruptions, mountain building, magnetic field reversals, and changes in sea level,
 
Rampino therefore suggests that astrophysical phenomena derived from the Earth’s winding path through the Galactic disc, and the consequent accumulation of dark matter in the planet’s interior, can result in dramatic changes in Earth’s geological and biological activity.

 


Tags: Earthspacelifebiologyextinctiondark mattergalaxy

Read original article » Back to category

Comments

Author: Guest
Posted: 2016-07-22
+0
That's a knowing answer to a dicufiflt question Reply


 

Recent headlines

  • Posted in Software on 2017-03-25 14:13:38
    Google Develops A Deep Learning Machine That Could Learn.....read more
    Posted in Medicine on 2017-03-25 14:26:25
    Google’s Calico partners with new biotech firm to.....read more
    Posted in Business on 2017-03-25 14:20:19
    25 US Cities Are Now Committed to 100% Renewable Energy..read more
    Posted in Science on 2017-03-25 14:16:44
    New Lenses Could Give You Super Color Vision..read more
    Posted in Business on 2017-03-24 19:18:37
    This company replaced 90% of its workforce with machines......read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me