Search for Life In The Universe.
“We cannot be the only instance of a race we just can’t be.” Sir Patrick Moore.
Sir Patrick Moore almost 90 one of the leading American Astronomers has spent decades observing the Solar System. Lately he had spoken about the the life in the Universe. ” I do think life is out there.” He said that there are 100,000millions stars in our galaxy ( Milky Way) and many other galaxies too have incredible amount of stars. We cannot be the only instance of race we just can’t be and there are far more intelligent than we are. We can’t get to them but they might get to us” he added. In an interview he spoke to Jonathan O’ Callaghan about Saturn’s moon Titan & Lapetus Jupiter’s moon Europa and Callisto.
NASA Explores the Red Planet…..Just a year ago NASA Mars Rover Curiosity began its flight to Mars. It landed on 6th August 2012 on Mars. The researchers are busy studying the planet using the different science instruments. Collecting soil rocks studyingdust storms climate environment etc. One questions could Mars have once harbored Life?
Since last fifty /sixty years we have been serching for Life in the Universe. NASA’s Search for Extra Terristrial Intelligence
(SETI) A moderate but wide ranging exploratory program is described which would use existing radio telescopes and advanced electronic systems with the objective of trying to detect the presence of just one signal generated by another intelligent species.
SETI’s programmme is a 10 year plan which will search for microwave signals from Extra Terrestrial Intelligence spanning the multidimentional search space programme. The entire sky will be searchd in two polarisation between 1.2 and 10 GHz. more than700 solar type stars etc will be searched….
The SETI@home is a software downloaded from the internet on PC’s .on the screen saver, analyses the data from nearly 3 millions of PC users around the world. It is one the largest project in the historyof the world.
“We humans are intellectually curious nomads ”..Neil deGrasse Tyson .We search for life of any form elswhere..Our future generation will also keep on searching.
Retrospection : In the good old days: Aristotle, Ptolemy and the Roman Catholic Church, the people all believed for centuries that the Earth was the centre of Universe. During the 3rd century BC a Greek philosopher named Aristarchus proposed the Sun Centered Universe. An Italian Monk Giordanu Bruno proposed in Public that there are many planets in the Universe that harbor life. He was burned at stake. Times have changed a lot since then . People had started to learn and discover. A Polish Astronomer Nicholas Copernicus in mid 1500 put forward the Sun Centered Universe! Soon it was realised that the Earth is not in the center of the Solar System .The Solar System is not in the center of Milky Way Galaxy, and Milky Way Galaxy is not in the center of the Universe.
The Chemistry of Life : Are We chemically special ? The basic elements present in our planet are Carbon Hydrogen Helium Nitrogen and Oxygen. Helium is inert. The other four elements most abundant and chemically active are common elements in the Universe.They are essential for Life on Earth too..That is why we have reason to believe life out there, we are not alone.
The Wow Signal: The Search for Extra Terristrial Intelligence.- Jerry R Ehman while working on SETI project in the year 1977 dated 15th August detected a radio signal .The signal bore expected hallmarks of potential non-terrestrial and non-Solar System origin. It lasted for the full 72-second duration that Big Ear Radio Telescope of Ohio State University observed, but it has not been detected again. It is called the Wow signal.
The Aliens might contact us again this time we are prepared technologically to receive their signals. It is observed that it is far too costly to send signals to the interstellar regions than to receive them.
Compiled by : Prajakta Dighe
My above article got published in the Hitavada dt 9/12/12
////////////////////////////////////////////////////////////////////////////////////////