PARIS (The Thursday Times) — Mirreekh ke gird gardish karne wale aik European khalai jahaz ne sayyare ke bare aatish fishanon mein se aik ki dhalwanon par taza daraaron se gas kharij hoti dekhi hai. Sciencedanon ke mutabiq yeh is baat ki alamat hai ke Mirreekh arziyati tor par murda nahin balke sirf khwabeeda hai, aur us ki satah ke neeche ab bhi magma harkat mein ho sakta hai.
European Space Agency ne kaha ke us ke ExoMars Trace Gas Orbiter ne sayyare ke shimali nisf kurre mein waqe aik waseeh aatish fishan Alba Mons ke ird gird daraaron ke upar hydrogen chloride ki ghair mamooli miqdar ka pata lagaya hai. Zameen par yeh gas aam tor par magma se jure suraakhon se kharij hoti hai. Polish Academy of Sciences ke Space Research Centre ke professor aur tehqeeq ke shareek markazi musannif Daniel Mège ne kaha: “Hamari tehqeeq se maloom hota hai ke Mirreekh mein itni androoni hararat baqi rahi hai ke woh haal hi tak aatish fishani sargarmi ko sahara de sake, aur mumkin hai ab bhi deti ho.”
Ghalat mausam: Mirreekh ki faza mein hydrogen chloride aam tor par shimali mausam-e-sarma mein sab se zyada hoti hai aur garmiyon mein taqreeban ghayab ho jati hai, jis ka taalluq sayyare par gard-o-ghubar aur pani ke chakkar se hai. Lekin orbiter ke infrared spectrometers ko baar baar aik istisna mila, hamesha aik hi jagah aur aik hi mausam mein: shimali garmiyon ke aaghaz mein, sardiyon ka pala bukharat banne ke foran baad, Alba Mons ki daraaron ke upar. Phir orbiter ke CaSSIS camera se qareeb se dekhne par taza aur tang daraarein nazar aayin, jin mein se kuch saikron meter lambi hain, aur un ke ird gird zameen ka rang badla hua tha.
Alexander Trokhimovskiy ki sarbarahi mein team ka khayal hai ke aik khwabeeda magma chamber se gasein in daraaron ke zariye upar aati hain, bilkul zameen par paye jane wale fumaroles yani aatish fishani gas ke suraakhon ki tarah. Sardiyon mein jab darja-e-hararat manfi 120 degree centigrade tak gir jata hai to barf in daraaron ko band kar deti hai, aur garmiyon ke aaghaz mein jab yeh bukharat banti hai to gas bahar nikal aati hai. Zameen ka badla hua rang kharij hone wali gas ke chhore hue zakhair ho sakta hai. Yeh nataij 4 November ko jareede Science Advances mein shaya hue.
Yeh kyun aham hai: Mirreekh par nizam-e-shamsi ke sab se bare aatish fishan hain, aur madaar se li gayi tasaveer ke mutabiq un mein se kuch pichhle chand million barson mein fa'al rahe hain. Seismometers ne Mirreekh par zalzale bhi record kiye hain. Lekin aaj tak lave ka koi naya bahao ya aatish fishan phatne ka koi waqia nahin dekha gaya. Agar magma ab bhi satah ke itna qareeb hai ke gas kharij kar sake aur zer-e-zameen pani se mile to yeh aise garam goshe bana sakta hai jahan jarsoome zinda reh sakein. Mège ne kaha: “Alba Mons ke ilaqe ki risti hui daraaron mein Mirreekh par zindagi talash karna bohat maqool hoga.”
Orbiter ne 2021 mein pehli baar Mirreekh par hydrogen chloride ka pata lagaya tha. Agency ke is mission ke project scientist Colin Wilson ne kaha: “Yeh nataij TGO ki ab tak ki sab se bari kamyabi sabit ho sakte hain.”
