Extraterrerstrial Life Have They Been Here Will We Visit Them Do They Exist At All

Let us first talk about the Universe and What We know about it so far.

Gold Cosmos The Universe As We call it Today is Believed to Consist of More Than 150 billion of galaxies.

Typical galaxies range from dwarfs With few "have got ten million (107) stars up to giants With One trillion (1012) stars, all orbiting the galaxy's center of mass. Many galaxies Cdn aussi Contain multiple star systems, star clusters and interstellar clouds Various. The Sun is one of the stars in Milky Way galaxy o; the Solar System includes the Earth and All That The Other objects orbit the Sun.

After Outside the Milky Way galaxy Were found to exist, initial observations prorated by using visible light Mostly. The peak of radiation MOST lees stars here, so the Observer of the stars form galaxies That has been "a major component of optical astronomy. It was est également favorable portion of The Spectrum for Observing ionized H II region, and for Examining the distribution of dusty arms.

The interstellar dust Presentations In the medium is opaque to visual light. It is more "transparent to far-infrared, Which Can Be Used to observe the Interior regions of giant molecular clouds and galactic cores in great detail. Infrared est aussi Used to observe distant galaxies red-Shifted That Were Formed Much Earlier In The History of the Universe. Water vapor and carbon dioxide absorbed a number of portions Useful Of The infrared spectrum, so high-altitude or space-based telescopes are Used For infrared astronomy.

The first non-visual study of galaxies, particularly active galaxies, Was Made using radio frequencies. The atmosphere IS Nearly transparent to radio Between 5 MHz and 30 GHz. (The ionosphere blocks signals below this range.) Large radio interferometers Have Been Used to Map The Force jets Emitted from active nuclei. Radio telescopes Cdn aussi Be Used to observe neutral hydrogen, Including, Potentially, The non-ionized matter in The Early Universe That Later collapsed to form galaxies.

Ultraviolet and X-ray telescopes observe Cdn Highly energetic galactic Phenomena. An ultraviolet flare WAS Observed When a star in a distant galaxy WAS Torn Apart From The tidal forces of a black hole. The distribution of hot gas in galactic clusters mapped Can Be by X-rays. The existence of super-massive black holes At The cores of galaxies WAS Confirmed-through X-ray astronomy.

What Kind of work done by o Have Been Major NASA and space exploration companies ESA?

Their efforts Have Any Given us answers To The initial Asked Questions here?

Both organisms Have Launched SEVERAL space based observatories Enabling us to get a year of Our Own Understanding solar system, galaxy and the Universe. Goal, so far, there's has not Been Any Scientific Proof of Life From These observations.

March space missions Have Given us Some answers That There Is a probability for existence of frozen water, hence Some potential for bacterial life forms.

NASA alone and in Collaboration with ESA Have Launched SEVERAL space based observatories Through the Last Two decades in order to Give us the Opportunity to See Past the noise on earth and to look Into The Other Invisible spectra of energy That We Can not See in The Visible light spectra.

NASA space program has Launched in 1990 with 4 courses in it.

First, We Had The Launch Of The Hubble Space Telescope Launched in 1990, Which WAS Destined to orbit the Earth at 569 kilometers. This observatory equipment HAD to In The observed visible, near infrared spectrum of light, and Have a spectrograph and wide field and planetary camera onboard. This Was a Joint Venture With ESA.

The Second Stage of the program Was The Launch Of The Compton Gamma Ray Observatory at April 5th 1991. This observatory HAD equipment onboard to observe The electromagnetic spectrum. The mission ended in June 4th 2000, When The observatory WAS deorbited.

The Third Stage of the program Was The.