Showing posts with label Mars. Show all posts
Showing posts with label Mars. Show all posts

Wednesday, November 25, 2015

Mars is destined to get a spectacular new planetary ring system to rival that of Saturn, in about 30 million years or so, according to scientists.



Mars to get planetary ring set to rival Saturn, with moon Phobos set to break up from tidal stress

Updated Mon at 2:50pm
 
Mars is destined to get a spectacular new planetary ring system to rival that of Saturn, but don't hold your breath because it will not be for another 30 million years or so, according to scientists.
The findings, published in the journal Nature Geoscience, are based on a new study to determine the fate destined to befall the diminutive Martian moon Phobos.
Over time Phobos is creeping inwards towards Mars at a couple of centimetres per year.
Dr Benjamin Black
"We found that Phobos is too weak to withstand tidal stresses from Mars and we expect it to break apart in a few tens of millions of years and form a ring around Mars," the study's lead author Dr Benjamin Black of the University of California said.

Only the giant planets of the outer solar system have rings at the moment.
Phobos — the larger of the two moons circling Mars — orbits just 6,000 kilometres above the surface of the red planet, closer than any other moon in the solar system.

"Over time Phobos is creeping inwards towards Mars at a couple of centimetres per year," Dr Black said.

"We wanted to figure out whether Phobos crashes into Mars or breaks apart to form a ring, so we needed to know how strong it was — is it going to be able to stand the increasing tidal stresses that are going to be pulling this little moon apart, or will it eventually succumb to these forces?"
Dr Black and co-author Tushar Mittal found that Phobos will be pulled apart by the red planet's gravitational tidal forces in about 20 to 40 million years' time.

"We concluded that Phobos would break apart between 2.4 and about 1.1 Mars radii, somewhere between 8,500 kilometres down to around 4,000 kilometres or so," Dr Black said.



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Monday, November 9, 2015

acidic fog created by volcanic eruptions on the red planet is the probable culprit for the erosion of rocks on Mars, believe scientists..




Eaten away by ‘vog’: Acid fog eroding rocks on Mars

The planet Mars showing showing Terra Meridiani is seen in an undated NASA image. © Greg Shirah


Scientists believe they have figured out why rocks on Mars are eroding. They say an acidic fog created by volcanic eruptions on the red planet is the probable culprit.
 
Planetary scientist Shoshanna Cole came up with the theory after studying a 100-acre area on Husband Hill in the Columbia Hills of the Gusev Crater on Mars using data gathered by a number of instruments on the 2003 Mars Exploration Rover Spirit.

She found that acidic vapors released by eruptions may have been responsible for eating away rocks on the Watchtower Class outcrops on the Cumberland Ridge and Husband Hill summit.

View image on Twitter
Acid fog corroded the surface of Mars: a new discovery from NASA's long-dead Spirit rover. http://bit.ly/1H6jT0V 


“The special thing about Watchtower Class is that it’s very widespread and we see it in different locations. As far as we can tell, it is part of the ground there,” which means that these rocks record environments that existed on Mars billions of years ago, Cole said in a press release submitted by the Geological Society of America.



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Thursday, November 5, 2015

Top Sky Event: Moon, Venus, Jupiter and Mars Just Before Sunrise




Published on Nov 5, 2015
In the coming mornings – November 6 and 7, 2015 the moon will be sweeping past the planets in the east before dawn. The moon will join the king planet Jupiter on the morning of November 6, and, on that day, the moon and Jupiter will be shining over another close-knit morning couple – Venus and Mars.

The moon, Venus and Jupiter are the brightest objects in the sky, after the sun. They rank as the second-brightest, third-brightest and fourth-brightest celestial bodies, respectively. In the coming days, these brilliant worlds at morning dawn will be a glorious sight.
http://earthsky.org/tonight

Music credit: Touchpoint by Audionautix is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/...)
Artist: http://audionautix.com/

Tuesday, April 1, 2014

Researchers from Imperial College London investigate a type of aromatic hydrocarbon called dimethylnaphthalene, which should enable them to identify violent events in the history of the universe.

March 31, 2014

Organic Ejecta --Clues to Violent Events in the History of the Universe


Pinwheel_Spitzer

Exploding stars, random impacts involving comets and meteorites, and even near misses between two bodies can create regions of great heat and high pressure. Researchers from Imperial College London have now developed a method for analysing the pressure experienced by tiny samples of organic material that may have been ejected from dying stars before making a long journey through the cosmos. The researchers have investigated a type of aromatic hydrocarbon called dimethylnaphthalene, which should enable them to identify violent events in the history of the universe.
The team also believe that their new technique could be applied on Mars, potentially using the existing technology on-board roving laboratories such as the one on the Mars Science Laboratory Mission to glean information about sources of organic matter on the red planet. Recognising the pressures recorded in the aromatic hydrocarbons can help to reveal whether it came from processes generated from ancient living organisms.Samples of dimethylnaphthalene are found in meteorites. Previously, scientists have only had the ability to investigate how they have been affected by heat. The Imperial researchers say their method for detecting periods when dimethylnaphthalenes have experienced high pressure will now allow for a much more comprehensive analysis of organic materials.

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Thursday, October 10, 2013

Martian settlement site to be printed on a 3D printer

 

Martian settlement site to be printed on a printer


марс планета космос

The first human settlers on Mars will use a 3D printer to print dwellings, greenhouses and even cutlery, in short, all they will need to live on the Red Planet. In the process, they will use the raw materials that are available over there. The Inspiration Mars Foundation noncommercial organization has shared plans to that end.

But experts point out that one shouldn’t overestimate the potential of 3D printers. The Mars Van Company, as well as the founder of SpaceX, or Space Exploration Technologies Corporation, Elon Musk, are also going to build colonial settlements on Mars in the next 10 to 20 years.
3D printers may come in handy in terrestrials’ settling on Mars. Inspiration Mars Foundation says it will use them to print all that the first settlers may require, including residential homes and interior items. These will be made of three types of plastic, namely polyethylene, polyester and epoxy-resin.
To obtain them, one will need oxygen and methane. Mars Foundation experts claim they know how to get the materials in question outside the Earth. The first settlers will also need fiberglass and cement, and they will make them from the sand that Mars is covered in. As the settlers build and make operational their greenhouse, they will also use potato starch in the printing process.
But they will hardly manage to print big-size parts, so they will have to bring along a laser cutter to cut the “printed” plastic sheets, to stick together structures of any size. The pioneers will have to print even their food; - the printer will mix up special-purpose powders with water so the dish would look like and have a taste of omelet or bacon, for example.
The idea of building this kind of settlement on Mars is feasible, but will call for mindboggling investments, feels a News of Cosmonautics magazine observer, Igor Lisov.
“Building a colonial settlement on Mars is feasible, as long as one is prepared to pay 100 billion dollars or more”.
But some experts point out that if the colonists choose to stay on Mars for good and will not have to be brought back to the Earth, the project will cost less. This is precisely the assumption that Mars Van, Elon Musk and Mars Foundation proceed from. This will help save money. Also, a one-way space rocket with an expedition on board may prove lighter.
The original prime equipment cargo with the first colonists will exceed the Curiositymoon rover weight by a factor of ten. This will also depend on the progress that researchers have made in waste processing before the expedition blasts off. The Martian project will spur technological development on the Earth, says a Corresponding Member of the Russian Academy of Cosmonautics, named after Konstantin Tsiolkovsky, Andrei Ionin.
“All technologies, namely 3D printers, waste recycling systems, the biotechnologies that help man survive in extreme conditions are effectively commercialized on earth. The money invested will be returned quite soon, for this is the idea of a one-way Martian project. Creating technologies of great commercial potential on the Earth will help carry out the project with the minimum government funding”.
Still, it will take a lot more than 10 years or 20 years to build Martian bases using printers. Such printers are still in “swaddling clothes”, says a Corresponding Member of the Russian Academy of Cosmonautics named after Konstantin Tsiolkovsky, Yuri Karash.
“When I first heard about the plans to use printers to print a base on another planet, I thought of the development of helicopters in the early 1950s. It was held then that a helicopter would eventually become very much like a bicycle, that any family would be able to buy a helicopter for a car price to fly to a shop, to a movie theatre or a park, to stroll there. There used to be similar plans for nuclear energy. It was held once that people would have nuclear-powered aircraft, cars and even wrist watches. But this is still not the case. What may seem easy enough on paper or in a lab may prove pretty difficult to achieve in practice”.
A 3D printer is a machine tool that virtually prints parts from plastic or other materials in keeping with the parameters indicated in a special drawing file. Next year, this kind of printer is due to be tested on board the International Space Station for the first time.


 
 
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Thursday, September 12, 2013

More than 200,000 people from 140 countries have applied to go to Mars and never return

MARSDAILY
Space Cadets line up for one-way Mars trip


by Staff Writers
Washington (AFP) Sept 09, 2013

More than 200,000 people from 140 countries have applied to go to Mars and never return, the group behind an ambitious venture to colonize the inhospitable red planet said Monday.
Bas Lansdorp, a Dutch engineer and entrepreneur, plans to establish a permanent base on Mars in a mission he hopes will take off in 2022 if he can find the necessary $6 billion.
One in four of the 202,586 applicants for the one-way trip are Americans, said Mars One, the non-profit group which initiated its hunt for "would-be Mars settlers" in April.
There are also hopefuls from India (10 percent), China (six percent) and Brazil (five percent), among other countries, it said.
By 2015, Mars One expects put up to 10 four-member teams through intensive training, with the first of those teams reaching to Mars in 2023 on a high-risk journey that would take seven months to complete.


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