মহাজাগতিক - মহাজগৎ সম্বন্ধীয়।
কিউরেটর - জাদুঘর রক্ষক। জাদুঘরের তত্ত্বাবধায়ক তথা পরিচালক।
তেজস্ক্রিয় পদার্থ - যা থেকে এমন রশ্মির বিকিরণ ঘটে যা অস্বচ্ছ পদার্থের মধ্য দিয়ে দেখা যায় ।
ওজোন স্তর - বায়ুমণ্ডলের উপরিভাগে ওজোন গ্যাসে পূর্ণ স্তর বিশেষ, যা আমাদের সূর্যের অতিবেগুনি রশ্মি থেকে রক্ষা করে ।
নিউক্লিয়ার বোমা - পারমাণবিক বোমা
ডাইনোসর - বর্তমানে লুপ্ত প্রাগৈতিহাসিক কালের বৃহদাকার প্রাণী ।
গ্যালাক্সি - ছায়াপথ।
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