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

We are all now connected by the Internet, like neurons in a giant brain.

 

Stephen Hawking

 

Case made for the existence of a 'ninth planet'

RATE THIS! +29
Posted in Science on 21st Jan, 2016 01:27 PM by AlexMuller

Astronomers say they have strong evidence that there is a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto. The team from Caltech has no direct observations to confirm its presence just yet. Rather, the scientists make the claim based on the way other far-flung objects are seen to move.

 

But if proven, the putative planet would have 10 times the mass of Earth. Astronomers have a vague idea where it ought to be on the sky, and their work is sure to fire a campaign to try to track it down.
 
"There are many telescopes on the Earth that actually have a chance of being able to find it," said Dr Mike Brown. "And I'm really hoping that as we announce this, people start a worldwide search to go find this ninth planet."
 
The group's calculations suggest the object orbits 20 times farther from the Sun on average than does the eighth - and currently outermost - planet, Neptune, which moves about 4.5 billion km from our star.
 
But unlike the near-circular paths traced by the main planets, this novel object would be in a highly elliptical trajectory, taking between 10,000 and 20,000 years to complete one full lap around the Sun.
 
The Caltech group has analysed the movements of objects in a band of far-off icy material known as the Kuiper Belt. It is in this band that Pluto resides. The scientists say they see distinct alignments among some members of the Kuiper Belt - and in particular two of its larger members known as Sedna and 2012 VP113. These alignments, they argue, are best explained by the existence of a hitherto unidentified large planet.
 
"The most distant objects all swing out in one direction in a very strange way that shouldn't happen, and we realised the only way we could get them to swing in one direction is if there is a massive planet, also very distant in the Solar System, keeping them in place while they all go around the Sun," explained Dr Brown.
 
"I went from trying very hard to be sceptical that what we were talking about was true, to suddenly thinking, 'this might actually be true'."

Tags: spaceastronomyplanettelescopeuniverse

Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Software on 2017-05-28 10:02:31
    Is China Outsmarting America in A.I.?..read more
    Posted in Business on 2017-05-28 10:11:31
    Largest floating solar plant begins operations in China..read more
    Posted in Science on 2017-05-28 10:06:10
    Israeli scientists announce new treatment for ALS..read more
    Posted in Business on 2017-05-27 11:41:40
    Google reportedly launched an AI investment program..read more
    Posted in Software on 2017-05-27 11:31:03
    How chatbot artificial intelligence will evolve over the.....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
    Nanoparticle vaccine shows potential as immunotherapy to fight.....read more
    Posted by AlexMuller
    Obesity is top cause of preventable life-years lost, study shows..read more
    Posted by AlexMuller
    Light can be utilized to control gene function..read more
    Posted by AlexMuller
    Brain stimulation restores memory during lapses, research shows..read more
    Posted by AlexMuller
    Wax worm caterpillar will eat plastic shopping bags: New.....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