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الجمعة، 17 يناير، 2014

Search for life on Mars fact or fiction


Search for life on Mars fact or fiction


Mars is still a puzzle. Many missions continued to search: space vehicles sent to him, and soon will be drilling on its surface deep in search for answers to scientific questions are: was there life in the distant past. Is it possible life on that red planet?
Find a guide to life requires skilled and experienced detectives. Ongoing missions explained a lot about Mars in the past 10 years. The Mission of the European Space Agency's Mars Express have a significant role in this. This satellite has spent 10 years in orbit around Mars. Thanks to data collected by the researchers were able to work on animated three-dimensional maps of the area and set some special qualities and the whereabouts of some minerals.
Discovery metals wet in some areas of Mars raised the attention of researchers. Set the location of the clay will determine which contained water.
  • Since the 1960s, the first pictures of the Martian surface and space probe Mariner captured four fueled speculation about the possible existence of water and life. The Viking missions in the 1970s confirmed the phenomenon.
Small spacecraft continued the search. Last year, NASA, MSL mission managed to land on the red planet, dramatically.

Thanks to the Mars Express, we see large quantities of ice below the surface of the planet is hidden by dust. The mission was also able to find something else more mysterious is methane.
The European ExoMars programme will be the first task. To search for signs of life in the past or now.
In 2016, the spacecraft will orbit the red planet to find the methane. By 2018, the Rover will be able to pick up samples of up to two meters. Towing force is six six six. All the wheels spin to the right or to the left. There is an extra drive allows for movement forward and backward. The progress and the roundness and lift the wheels. It is very important, for example, when we want to study a rock, we do not want thousands of round-trip times. We can progress and stand before the lifting wheel. We also do not use wheels Ka wheels but filed for use as foot. The wheel can skid.
The researchers did not agree to locations that should degrade the deputies of space? Suppose that life existed prior to about four billion years ago, the best spots are the ancient valleys where water existed for long.
The Mars complex puzzle that researchers have achieved rapid progress to disassemble a challenge may help to understand the Earth as well.
Search for life on Mars fact or fiction

Search for life on Mars fact or fiction




Search for life on Mars fact or fiction

Search for life on Mars fact or fiction



Search for life on Mars fact or fiction



Search for life on Mars fact or fiction



Search for life on Mars fact or fiction


Search for life on Mars fact or fiction

الأربعاء، 15 يناير، 2014

About the winter solstice and some wonderful pictures

 About the winter solstice and some wonderful pictures
About the winter solstice and some wonderful pictures

Longer on December 21 astronomical beginning of winter , and lasts for 90 days, and marks the astronomical phenomenon known as « the winter solstice » , where the sun is directly overhead at the Tropic of Capricorn , which is located south of the equator during the year.

Thus, the length of night, 13 hours and 57 minutes , the longest night of the year , while the length of the day is 10 hours and 3 minutes and is the shortest day of the year.


The winter solstice occurred astronomical happens when the sun is in the sky at greater distance angle on the edge of the level of the equator , and according to the calendar and the region of the globe , the winter solstice may occur between December 20 and December 23 of each year in the Northern Hemisphere , and between June 20 , and June 23 of each year in the southern hemisphere , and on the winter solstice is the shortest day and longest night of the year.
A day after the winter solstice the sun begins to rise to the virtual movement in the North , where decreasing the length of the night and increases the length of the day until the night even with the day on March 21, the beginning of spring.

About the winter solstice and some wonderful pictures
  •  Great pictures about winter solstice
About the winter solstice and some wonderful pictures 
 
About the winter solstice and some wonderful pictures
 
About the winter solstice and some wonderful pictures
 
About the winter solstice and some wonderful pictures
 
About the winter solstice and some wonderful pictures
 

الأحد، 12 يناير، 2014

The appearance of Aurora in the Arctic and Antarctic, without other

The reasons for the emergence of aurora borealis in the Arctic and the South only
The appearance of Aurora in the Arctic and Antarctic, without other
The phenomenon of Aurora Borealis impressed by natural phenomena has lasted many years scientists to learn its secrets finally revealed it is formed due to the Earth's magnetic field and the twilight Earth defence mechanism against lethal solar wind that cancelled out the magnetic field and "Burns" is a danger to us and rather than find my signature irritating? see this delightful scene that deserves this great phenomenon to swear by God?
  • The cause of this phenomenon is the magnetic disturbances and lower and higher density difference and normally be low density but energetic sunlight and help in the flow of molecules, atomic energy-rich electrons and protons to penetrate the magnetosphere of the Earth's radiation belt and enter "Yen." the alalktornat protons vicious to surplus air are based on the North and South magnetic poles, stretching to 20 degrees away from the Center, these molecules then collide with gas molecules in the atmosphere that cause particles of electromagnetic radiation in the visible part of the spectrum.

  • Earth's magnetic field and the Van Allen radiation belts represent the Earth's magnetic north pole-piece and another Southern magnetic power lines linked from the South Pole to the North Pole. And the Earth's magnetic axis is tilted on its axis by geographical 11.6 degrees, going through this 400 km away from the center of the Earth, and ends with two points on the surface are two magnetic poles Geo-Magnetic Points) located north of North Greenland and specifically when the longitudes 103 ° w and 78.5 ° n, but the result of solar wind coming towards the Earth, the Earth's magnetic field is confined inside the cavity is called the magnetosphere (Magnetosphere) and surrounding land on a Comet, compressing magnetic field lines in the Sun, while stretching out in the direction The opposite problem about long tail magnetic field six million kilometres.

  • When the charged particles to earth they lie in magnetic field begins with the movement of the screws between two magnetic poles close at latitude 70-75 degrees North and South very quickly between (0.1-3.0) in seconds so that the flow of electrons and protons in the West about the land problem belts with section hilali called Van Allen radiation belts by the physicist James Van Allen (James Van Allen) who first predicted its accounts in these belts after the results came out two fully equipped space (Explorer 1 & 3) in 1958.

  • The two belts, one relatively small and nearby, 3,000 kilometers from the Earth surface, and mainly consists of protons with energies high, further and further, (20,000 km) and consists primarily of electrons and protons with energies as low.

  • Called the bends that make up the twilight sky high arches quiet (Rayed Arcs) and increased auroral activity apply the bends on a so-called small cliques radial (Rayed Bands) are up tens of kilometers. As most of the activity comes from the radial bands pink and becomes several thousand kilometres, and once it stops the activity auroral remakes twilight bar form and celebrates all the bends that existed, or turn into twilight to cloud form others. Shows lights in various colors are green, red, purple and yellow, and the rest of the colors are a combination of primary colors
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See also here:  How does it happen aurora borealis   - See more at: http://www.astronomygalaxies.tk/2014/01/Aurora-borealis.html#sthash.4ZglPT0u.dpuf

الجمعة، 10 يناير، 2014

How does it happen aurora borealis

 How does it happen aurora borealis

 How does it happen aurora borealis


See how the aurora happens , we have to know what is happening on the surface of the sun and what happens on the ground and how they interact outputs of the two events together .
 Sun:
 Sun consists of three layers , optical and colorimetric and coronet . During the peak of solar activity in its all a ten -year-old , often on the surface of the sun sunspots is known in the class optical , these spots are a sign of solar activity , a disturbance in the area Almngatisa from the sun and always appear in groups last for hours or days or maybe a full month . Accompanied by what is known as sunspots and solar flares Balintoouat that occur on the surface of Sunshine 500.000 km distance from the surface of the sun and can be seen during a total eclipse of the sun , and is part of the color layer

 How does it happen aurora borealis

 However, the (Chiakhadd) stronger and explosion outcrops show rows of sunspots and the White Paper 's , and possesses one of which is the energy equivalent of one billion two million tons of TNT , and if what was seen during the solar eclipse , and rises above the surface of the sun , but rarely see because they do not live for more than one minute . And Chiakhadd responsible for sending X-rays and gamma rays and visible rays in addition to the Falls of protons and electrons with very high energy with flowing per second toward the solar system . The upper layer of color that stretches about ten thousand kilometers comes the solar corona , which extends a distance of ten times the diameter of the sun to the outside, which individual atoms Almrhawkh to the top surface of the sun , and while moving particles towards the outside , the corona occupies a size bigger and bigger and it becomes less dense , and as a result , the luminous afraid to fade completely . This does not mean that the charged particles had stopped on the march , but it extends to flood the inner planets and Jupiter and Saturn and possibly reach Pluto , then take a new name is the solar wind , and feed the solar wind mainly Chiakhadd that consists of protons and electrons with high energies , up degree heat the corona to about a million degrees Celsius ! .
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Aurora borealis. Facts and Definitions

 Aurora borealis. Facts and Definitions


  phenomena that appear in the sky phenomenon of Aurora Borealis, which is one of the most beautiful astronomical phenomena and the amateur astronomers and enjoying the view and photographed. This phenomenon is another name for the northern lights or Aurora Borealis.
  • What is the Aurora Borealis
It offers stunning views of the colorful screen big directional celestial north and South poles, Twilight takes its name because it appears quite sunset or shortly will indicate that at the poles and in some---in the form of arcs or stretch marks pretty, sometimes in the form of a glamorous radiation last moments, hours or maybe even dawn, very similar to the rare shvkan in warning was made more strict or two but may take a close pattern. They usually display shows remote auroral sunset where the Northern horizon transparent bracket until half an hour was starting to move in the sky taking the gloss more higher, starts his new post bracket — separate from the previous, and so on.And while the arches rise generated them flexing and become shiny, then after a long time or a short twilight begins to fade.
  • Offers stunning and beautiful
Aurora borealis. Facts and Definitions

Aurora borealis. Facts and Definitions

Aurora borealis. Facts and Definitions

Aurora borealis. Facts and Definitions

Aurora borealis. Facts and Definitions

 Aurora Borealis forms a bar shape and two key cloud shape, usually starts the auroral display in the sky bar form several hundred kilometres and reaching vulnerable East and West several thousand kilometres so evident when compared with the background stars that appear small compared to the great square, thickness, up to several hundred yards. Called the bends consisting as twilight in the sky radial arches and increased auroral activity implements the bends on a small so-called radial cliques, which are up to tens of kilometers, rising another activity emanating from radial icon pink and becomes displayed several thousand kilometres and auroral activity stops reverting once the twilight bar and form disappear each alanthnaeat that existed, or turn into twilight to cloud shape, shows lights in various colors are green, red, blue, yellow, The rest of the colors are a combination of the primary colors.
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الاثنين، 6 يناير، 2014

The difference between the purchased images and pictures of Google Earth




The difference between the purchased images and pictures of Google Earth? Is it Live or recorded
The difference between the purchased images and pictures of Google Earth


Google Earth imagery is a tremendous amount of satellite images captured Boqmar different and in different dates during the previous years was recorded , therefore it is not broadcast live , as some believe .
Much less accurate coordinates of accuracy that can be obtained by processing the raw satellite imagery .
The majority of military and civilian applications can not be implemented on the Google Earth imagery with the exception of a few applications such as watching and objective measurements of distances and areas .
The difference between the purchased images and pictures of Google Earth

Does not contain the file Metadata and which contains all the imaging data and the sensor user and therefore do not contain data (such as analytical capacity - date and time of photography - spaces frequency used Frequency Bands - inclination angle of the sun for a moment photography - type projection Projection- model balled Earth Spheroid -. .. ) .
Adhere to an area of ​​the image displayed on the screen only , and work on an area larger than the screen requires Thumbnail image resulting in reduced analytical capacity significantly .
 

Military applications for satellite imagery

Military applications for satellite imagery

The discovery of places of vital goals such as air bases and ammunition depots and determine its coordinates .
Analysis and interpretation of the components of targets detected. Within the satellite
Account spaces goals and estimate the quantities of munitions needed to be destroyed.
Follow the changes in dates and goals in different times and monitor the movements of the warning intentions .
Produce three-dimensional maps (Digital Elevation Models) and implementation of a simulation of the nature of the land .
Study of the theater of operations through soil classification and study tendencies ground for the benefit of the most suitable places to see the movements of vehicles and calf track of the troops and perform the projection and the air and landing as well as the study of the most suitable places to carry out acts of defiance for the progress of the hostile forces .
Implementation of land navigation depending on Satellites. Photos .
The discovery of the gaps resulting from the terrain in radar detection range for our troops .
Select the most appropriate places to create new radars check the best coverage and less gaps .
 
Determine the most appropriate places to put the antennas in favor of eavesdropping wireless electronic warfare
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 Military applications for satellite imagery