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

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

 

Mars atmosphere 'eroded by Sun activity'

RATE THIS! +24
Posted in Science on 6th Nov, 2015 01:05 PM by AlexMuller

Researchers working on the Maven satellite have reported a big set of results in a clutch of scholarly papers. These detail how Martian air today is being removed at high altitudes through its interactions with the Sun. They calculate the rates at which gases escape, and suggest why these rates may have been even higher in the past.

 

"We're well on the way to answering many of our questions; much further along actually than I thought we would be at this stage," said Bruce Jakosky, the principal investigator on Nasa's Maven spacecraft. "What we're reporting today is data from just the first 6-7 months from our primary mission.
 
"We're still analysing this data, and we have already been approved for a mission extension that will allow us to round out one full Martian year and to see the response of the system to all the seasons on Mars," he told BBC News.
 
All the observations by previous satellites and landers at the Red Planet indicate that it was once shrouded in a thick blanket of gases, which supported the presence of liquid water at its surface. This is evident in the many landscape features that resemble the remains of river channels, deltas and lakes.
 
But the air pressure on Mars today is less than 1% of what it is on Earth, meaning any free water would boil away or freeze solid. Some of the air has probably reacted with, and been incorporated into, minerals at the surface.
 
However, the most likely explanation for the atmosphere's loss, and the one that Maven began testing last year, is that the Sun has simply stripped it away, turning Mars from a warm and wet world into a cold and dry one.

Tags: MarsplanetspaceMAVENNASAatmospheresun

Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Business on 2017-09-21 08:16:42
    Google signs $1.1bn HTC smartphone deal..read more
    Posted in Business on 2017-09-21 08:11:40
    US solar plant costs fall another 30 per cent in just one.....read more
    Posted in Science on 2017-09-21 08:04:25
    SpaceX will call global internet satellite network Starlink..read more
    Posted in Software on 2017-09-20 19:05:15
    Google boosts Cloud Natural Language API with automatic.....read more
    Posted in Software on 2017-09-20 18:55:34
    Salesforce to launch $50 million artificial intelligence.....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
    Scientists probe Neptune's depths to reveal secrets of icy.....read more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin cancer.....read more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not work..read more
    Posted by AlexMuller
    Artificial neural networks decode brain activity during.....read more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the nearest.....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