নাসার নতুন একটি টেলিস্কোপ তাকিয়ে আছে অনন্ত মহাবিশ্বের দিকে, দিচ্ছে নিখুঁত ছবি!
এরকম একটা ছবি গত বুধবার, ১৬ই মার্চ, ২০২২-এ প্রকাশিত হয় যা ছিল জেমস্ ওয়েব স্পেস টেলিস্কোপের পরীক্ষামূলক একটি ছবি। পৃথিবী থেকে ১৬ লক্ষ কিলোমিটার দূরের টেলিস্কোপটির ১৮ টি ষড়ভুজাকার দর্পণ ব্যবহার করে কিভাবে একটি সমন্বিত ছবি তৈরি করে তা পর্যবেক্ষণ করতে এ পরীক্ষাটি করা হয়। কর্মকর্তারা বলছেন,এটি প্রত্যাশার চেয়েও বেশি ভালো কাজ করছে।
বিজ্ঞানীরা বলছেন তারা পরীক্ষার ছবিগুলো দেখার সঙ্গে সঙ্গেই বিস্মিত ও ঘাবড়ে গিয়েছিলেন।
নাসার পরীক্ষামূলক ছবিটি ২০০০ আলোকবর্ষ দূরের একটি নক্ষত্রের দিক লক্ষ্য করে তোলা। উল্লেখ্য এক আলোকবর্ষ সমান প্রায় ৯.৭ ট্রিলিয়ন কিলোমিটার।
ছবি: NASA/STScI
ওয়েব টেলিস্কোপের আয়না এবং ফিল্টার ফোকাস করা উজ্জ্বল নক্ষত্রটিকে আরো লাল এবং অধিক রশ্মিপূর্ণ দেখালেও এর ব্যাকগ্রাউন্ড সবারই মন কেড়ে নিয়েছে। ওয়েব অপারেশন প্রকল্পের বিজ্ঞানী Jane Rigby বলছেন, ”পিছনের ওই হাজার হাজার ছায়াপথ দেখে সত্যিই কেউ বিস্মিত না হয়ে পারবে না। ওই ছায়াপথগুলোর বয়স কয়েক বিলিয়ন বছর। অবশেষে বিজ্ঞানীরা আশা করতে পারেন যে ওয়েব এতই দূরে এবং সময়ের পিছনের অবস্থা দেখতে পাবে যা বিগব্যাং এর মাত্র দুইশ মিলিয়ন বছর পরের দৃশ্য।”
১০ বিলিয়ন ডলারের ওয়েব টেলিস্কোপ গত ডিসেম্বর মাসে দক্ষিণ আমেরিকার গায়ানা স্পেস সেন্টার থেকে উৎক্ষেপণ করা হয় এবং জানুয়ারিতে এর নির্দিষ্ট গন্তব্যে পৌছায়।
Source:
NASA
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