Extraterrerstrial life - Have you been here? We are going to visit? Not that there?
Let's talk first about the universe and what we know about it until now.
Cosmos, or as we call the universe today is thought to consist of over 150 billion galaxies.
Galaxies Typical range from dwarfs, with only ten million euro (107) stars up to giants with one trillion (1012) stars, all orbiting the galactic center mass. Galaxies can also contain many multiple star systems, star clusters, and various interstellar clouds. The Sun is one of the stars in our galaxy, the Milky Way, Solar System includes the Earth and all other objects orbiting Sun
After the galaxies outside the Milky Way, were found to exist, initial observations were made especially visible light. The maximum radiation of most stars are here as well that observation of the stars forming galaxies has been an important component of optical astronomy. Is also in favor of a part of the spectrum for observation ionized H II regions, and to analyze the distribution of weapons of dust.
The dust present in the interstellar medium is opaque to visible light. It is more transparent for infrared remote that can be used to observe the interior regions of giant molecular clouds and galactic nuclei in great detail. Infrared is also used to observe distant galaxies, redshifted to have formed much earlier in the history of the universe. Water vapor and carbon dioxide absorbed a number of useful portions infrared spectrum, telescopes as high altitude or space used for infrared astronomy.
The first visual survey of galaxies, galaxies particularly active, was done using radio frequencies. The atmosphere is almost transparent to radio between 5 MHz and 30 GHz (the ionosphere blocks signals below this range.) big radio interferometers have been used to assign aircraft assets issued by the active nuclei. Radio telescopes can also be used to observe neutral hydrogen, including, potentially, non-ionized matter in the early universe that later collapsed to form galaxies.
Ultraviolet and X-ray telescopes can observe highly energetic galactic phenomena. A UV flash was observed when a distant star in the Galaxy was torn tidal forces of a black hole. The distribution of hot gas in galaxy clusters can be mapped by X-rays. The existence of supermassive black hole in the nuclei of galaxies was confirmed through X-ray astronomy
What kind of efforts have been made by our main business of space exploration NASA and ESA?
Their efforts have given us any answers to initial questions posed here?
Both organizations have launched several observatories in space allows us to gain an understanding of our own solar system, galaxy and universe. But so far, there has been no scientific proof of life of these observations.
Mars space missions have given us some answers that there is a probability of the existence of frozen water, therefore, a a potential for bacterial life forms.
NASA alone and in collaboration with ESA have launched several observatories in space over the last two decades to give us the opportunity to see beyond the noise on the ground and look at the invisible spectrum of energy that others can not see in the light spectrum visible.
NASA launched a space program in 1990 with 4 stages in it.
First, we had the launch of the telescope Space Telescope, launched in 1990, he was destined for Earth orbit at 569 kilometers. The observatory had equipment to observe in visible, near infrared of light, and have spectrograph and a wide field and planetary camera on board. This was a joint venture with the ESA.
The second phase of the program was launched the Compton Gamma Ray Observatory in April 1991 5. The observatory had equipment on board to monitor the electromagnetic spectrum. The mission ended on 4 June 2000 to leave the orbit of the observatory.
The third phase of the program was the launch of Chandra space telescope on 23 July 1999. The observatory is expected to last until 2009 and maybe a little more. Chandra is the observation of X-ray signals and orbits 139,000 km above the earth, is approximately one third of the distance to the moon.
The fourth stage of this program was the launch of the Spitzer space telescope designed to observe the infrared, heat, radiation. The launch was on 23 August 2003 and the expected lifetime of 5 years has already been exceeded. He continues to work after some minor adjustments are has done recently. The observatory is gradually receding from us at a speed of 15 million miles per year from its original orbit behind the Earth as seen from the sun.
NASA has recently launched on 6 March 2009, the Kepler space telescope. This telescope is designed to search for planets like Earth orbiting other stars. Using a spatial photometer developed by NASA, will be observed over the brightness of 100,000 stars over 3.5 years to detect periodic transits of a star by their planets.
The Kepler Mission is a much higher chance of detecting planets Earth than the Hubble Space Telescope Hubble, as it has a much wider field of vision (about 10 square degrees), and will be dedicated to the detection for planetary transits.
Finding Earth-like planets is expected to have three or more years with this mission. Kepler is in an orbit Earth but a planet in orbit behind the sun.
The use of these telescopes together to make pictures of galaxies or stars within a range multiple spectrum allows us to get fantastic images that we see on the website of NASA f.inst. Also allows us to make observations of several generations of stars and galaxies.
Space of several other ground-based observatories have been launched into space in recent decades, more or less.
Wilkenson Microwave Anisotropy Probe (WMAP) was launched June 30, 2001 to observe cosmic glow, fluctations the temperature sensitivity than 0.00001 degrees celcius. Allegedly made comments about when the Universe was just 380,000 years old. The universe is supposed to be 13-14 billion years old. The observatory is located at the L2 Lagrange point behind the Earth (1.5 miles from Earth).
Solar and Heliospheric Observatory satellite - SOHO launched December 2, 1995 as a joint venture with NASA and ESA. SOHO currently still operating after more than ten years in space. Besides its scientific mission, which is currently the main source of near real-time solar data for space weather prediction. The observatory is located at the point ands L1 Lagrange between the land of sunshine.
The Global Geospace Science Satellite (GGS) Wind, a science spacecraft NASA launched 1 November 1994 and Advanced Composition Explorer (ACE) are two other spacecraft currently in the vicinity of the Earth-Sun L1 point, about 1.5 miles from Earth.
The wind was deployed to study radio and plasma that occur in the solar wind and Earth's magnetosphere.
The objective the ACE to examine this site, including energetic solar wind particles, the interplanetary medium, and other sources. In real time ACE data is used to improve forecasts and warnings of solar storms. The observatory was launched on 25 August 1997.
The Galaxy Evolution Explorer (GALEX) was launched in April 2003 28. This observatory was designed for observations of ultraviolet radiation to the ultraviolet spectrum of energy.
STEREO (Solar Terrestrial Relations Observatory) is the third mission of the NASA program Solar Terrestrial Probes (STP). This two-year mission, launched in October 2006 will provide a unique and revolutionary Sun-Earth system. The two nearly identical observatories - one ahead of Earth in its orbit, behind the other - you trace the flow energy and matter from the Sun to Earth. It will reveal the 3D structure of coronal mass ejections, violent eruptions of matter from the sun that can damage satellites and electricity networks and help us understand why they happen. STEREO will become a key addition to the satellite fleet of space weather detection, providing more accurate alerts for the arrival time of the Earth addressed expulsions to the single side perspective view. On 24 January 2009, the two STEREO spacecraft reached 90 degrees apart, a condition known as quadrature. As the two STEREO spacecraft entered orbit around the Sun in early 2007, have been little a little drifting, other than Earth, and others. Ahead has been drifting at an average of 22 degrees per year compared to Earth, and has been drifting behind the same speed in the opposite direction. After two years in orbit, the two spacecraft have finally reached the square.
ODIN was launched in February 2001 with two years of life expectancy, the satellite Odin Swedish Space Corporation has two objectives: to study the formation of stars and solar system primitive, and to study the Earth's atmosphere, where it will be investigating the mechanisms behind the destruction of the ozone layer and warming effects global.
SWAS placed in low Earth orbit in December 1998, the submillimeter wave astronomy satellite (SWAS) was a year of two missions NASA to improve understanding of the formation of stars by studying the composition of interstellar clouds and the means by which to collapse. SWAS always the most precise measurements of water vapor in the interstellar clouds and set the tightest limits on the maximum amount of molecular oxygen that could be in these clouds.
The Infrared Astronomical Satellite (IRAS) was the first space-based telescope to attempt a comprehensive survey of the sky at infrared wavelengths. IRAS sources detected about 350,000 mid-infrared (5-40 microns) and far infrared (40-100 microns), increasing the number of known astronomical objects by 70%. Among the discoveries of IRAS was first known dust disk around a star (Vega), six new comets, and a population of "ultra-infrared galaxies" that are much brighter in the infrared optical wavelengths
IRAS was the successor of the European Union Space Agency's Infrared Space Observatory (ISO), which operated from November 1995 to May 1998. ISO observed in the range of 2.5 to 240 microns with greater sensitivity and resolution of its predecessor, and made the surprising discovery that water vapor is a common and important part of the interstellar medium. The spacecraft found water in the vicinity of stars, both the beginning and end of his life in Sources close to the center of the galaxy, and in the atmospheres of planets in our solar system. ISO also found that galaxies appear to be ultra-fed flashes rather than a black hole.
Future launches planned for space-based observatories are:
Planck satellite will be launched in spring 2009.
Herschel Space Observatory is in the spring of 2009. Herschel will cover 1,000 times more often than "real estate" that SWAS, who observed the spectral lines in five specific sub-millimeter wavelengths: the water, water isotope, molecular oxygen, neutral carbon monoxide and carbon isotope.
James Webb Space Communication satellite launches in 2013 or later. This observatory will observe the infrared electro magnetic spectrum and the visible.
Then there is the Gaia probe for which no date set yet.
Abstract
The initial response to our questions, no, we have found no scientific evidence of life forms, at least some intelligence to close or beyond from ours.
This is not due to the fact that there is no possibility of life forms within our galaxy or beyond, but rather of our limitations technological and perhaps intellectual limitations to efficiently search for life forms.
I am a deep believer that there are ways of life apart us in our universe or cosmos, somewhere. If we are going to be able to communicate with them before our country goes to extinction is another issue that I deserve doubt.
Until now we could only get close to our own galaxy, and could not thoroughly examine other galaxies. We could have a few thousand years Full search, not limited by our sun will swallow us (more than one billion years in this case), but the exploitation of human beings, what makes our time on earth limited by the fact that not enough resources to go with our ever that the expansion of the population.
About the Author
He has a background as civil engineer and geoscientist. He has worked mainly within the oil and gas industry from the mid 1980s. He has written a few fictional novels as well as being the author of some professional litterature within oil and gas sector, he is now an editor of some web sites.
Should I pray or run the hospital?
I seriously have shown that their eyes may freeze .... that or if I have arthritis in orbit optical roll Several times my eyes on some of these questions! http://answers.yahoo.com/question/index; _ylt = AhCtssIiJ9xJ8xt7r3kR54Lsy6IX; _ylv = 3? qid = 20080828032538AAFA8aF & Show = 7 # profile-info-mmOUnLz1aa
Yes, eyes can be frozen. "Oculogyric crisis" is the fancy name. * For those who * Type of questions I suggest you substitute a "sigh" or just mentally set the "wisdom of humanity Ometer" by another notch. Besides resort to drinking game, if necessary, I just remember the wise words of the bowl of petunias: "Oh no, not again." (Douglas Adams, HHGTTG)
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