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Tuesday, August 1, 2023

Moon - Chandrayaan 3 - Pournami - Thiruvallikkeni

Moon has attracted humanity over the centuries ..    ஸ்ரீபார்த்தசாரதி எம்பெருமான் 14.6.2022 - வைகாசி  பௌர்ணமி புறப்பாட்டில் திவ்ய தரிசனம்

பெரியாழ்வார் கண்ணனுக்கு விளையாட்டு காண அம்புலி விரைந்து வா என நிலவை அழைத்தார். 

முன் காலங்களில்,  நிலா, நிலா ஓடி வா, நில்லாமல் ஓடி வா!!, மலை மீது ஏறி வா, மல்லிகைப் பூ கொண்டு வா!!  என அழைத்து குழந்தைகளுக்கு சோறு ஓட்டினார்கள்.  

அற்புத கவிஞன் மஹாகவி சுப்ரஹ்மண்ய பாரதியார் பல விஷயங்களை முன்னமே கணித்தவர்.  பாரதியாருடைய நாட்டு வணக்கம் என்ற பாடலில் “எந்தையும் தாயும் மகிழ்ந்து குலாவி இருந்ததும் இந்நாடே -    சிந்தையில் ஆயிரம் எண்ணம் வளர்ந்து சிறந்ததும் இந்நாடே - இதை வந்தனை கூறி மனத்தில் இருத்தி என் வாயுற வாழ்த்தேனோ? - இதை வந்தே மாதரம், வந்தே மாதரம் என்று வணங்கேனே?” என்று கேட்டு நாட்டுப்பற்றை வளர்த்த பாடலில், - எங்கள் அன்னையர் தோன்றி மழலைகள் கூறி அறிந்ததும் இந்நாடே - அவர் கன்னியராகி நிலவினில் ஆடிக் களித்ததும் இந்நாடே -  என்று நிலவின் அழகினை வருணித்ததும் அல்லாது  நிலவில் மனிதன் கால் பதிப்பான் என்பதையும் உரைத்தார்.

At a meeting of the Astronomy Club, its president, Professor Barbenfouillis,  proposes an expedition to the Moon. After addressing some dissent, five other brave astronomers—Nostradamus, Alcofrisbas, Omega, Micromegas, and Parafaragaramus—agree to the plan. A space capsule in the shape of a bullet is built, along with a huge cannon to shoot it into space. The astronomers embark and their capsule is fired from the cannon with the help of "marines", most of whom are played by young women in sailors' outfits.  Landing safely on the Moon, the astronomers get out of the capsule (without the need of space suits or breathing apparatus) and watch the Earth rise in the distance. Exhausted by their journey, they unroll their blankets and sleep. As they sleep, a comet passes, the Big Dipper appears with human faces peering out of each star, old Saturn leans out of a window in his ringed planet, and Phoebe, goddess of the Moon, appears seated in a crescent-moon swing. Phoebe causes a snowfall that awakens the astronomers, and they seek shelter in a cavern where they discover giant mushrooms. One astronomer opens his umbrella; it promptly takes root and turns into a giant mushroom itself. 

Wonder what all these is about – the plot of ‘A Trip to the Moon’ (French: Le voyage dans la lune) -  French science-fiction adventure film directed by Georges Méliès in 1902. Inspired by a wide variety of sources, including Jules Verne's 1865 novel From the Earth to the Moon and its 1870 sequel Around the Moon, the film follows a group of astronomers who travel to the Moon in a cannon-propelled capsule, explore the Moon's surface, escape from an underground group of Selenites (lunar inhabitants), and return to Earth with a captive Selenite.  

Life has changed in fast lane ! as reaching moon is no longer a Science fiction.  With Artemis missions, NASA will land the first woman on the Moon, using innovative technologies to explore more of the lunar surface than ever before.  NASA claims that they are collaborating with commercial and international partners and establish the first long-term presence on the Moon. Then, the plan using what is learnt on and around the moon to take the next giant leap -   : sending the first astronauts to Mars.

Meantime, India has taken a giant leap in trying to land on the moon.   On 14th July 2023, India successfully launched Chandrayaan 3.  Chandrayaan-3, the word for “moon craft” in Sanskrit, took off from a launch pad in Sriharikota, an island in southern India, with an orbiter, a lander and a rover, in a demonstration of India’s emerging space technology. The spacecraft will embark on a journey lasting slightly over a month before landing on the moon’s surface later in August.  “Chandrayaan-3 is scripting  a new chapter in India’s space odyssey.   

After flying in the vacuum of space for nearly 15 days, the Chandrayaan-3 mission is ready to be put on the road to the moon. The spacecraft will go through the critical Trans Lunar Injection tonight. The Indian Space Research Organisation (Isro) has scheduled this pivotal event between 12 am and 1 am on August 1. The move is expected to last between 28 to 31 minutes, during which the engines on the Propulsion Module of the spacecraft will roar to life to increase the velocity. Upon successful completion of the TLI, Chandrayaan-3 will embark on its lunar transfer arc, approximating an elliptical orbit about the Earth with an apogee near the radius of the Moon's orbit.

The spacecraft is expected to reach lunar orbit after a series of complex maneuvers. Once in lunar orbit, the mission will enter its moon-centric phase, with several critical events lined up, including the separation of the lander, a set of deboost maneuvers, and finally the descent phase for a soft landing on the lunar surface.  Chandrayaan-3 carries scientific instruments designed to study various aspects of the lunar surface, including the thermophysical properties of the lunar regolith, lunar seismicity, the lunar surface plasma environment, and the elemental composition in the vicinity of the landing site on the Moon.

Here are some photos of Sri Parthasarathi Emperuman taken during Vaikasi Pournami purappadu on 14.6.2022

adiyen Srinivasa dhasan
Mamandur Veeravali Srinivasan Sampathkumar

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