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शुक्र Venus

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By Er. Alok Kumar


शुक्र
सौर मंडल में बुध के बाद शुक्र दूसरा ग्रह है। इसका आकार लगभग हमारी पृथ्वी जितना है। इसका व्यास 12,104 किमी है। इस ग्रह को अंतरग्रह भी कहा जाता है. क्योंकि यह ग्रह भी सूर्य और पृथ्वी के बीच में है। इसके कारण आप इस ग्रह को केवल सुबह या शाम के समय ही देख सकते हैं।
चूँकि इस ग्रह पर वातावरण बहुत घना है इसलिए इस पर पड़ने वाली सूर्य की रोशनी काफी हद तक परावर्तित हो जाती है। इसलिए शुक्र अन्य ग्रहों की तुलना में अधिक चमकीला दिखता है।
शुक्र की परिक्रमण अवधि और सूर्य के चारों ओर परिक्रमण की अवधि में बहुत अंतर है। शुक्र को अपनी परिक्रमा करने में 243 दिन लगते हैं। अतः इसे सूर्य की परिक्रमा पूरी करने में 225 दिन लगते हैं। अर्थात शुक्र ग्रह पर एक दिन उसके वर्ष से भी बड़ा होता है।
सूर्य से शुक्र की दूरी 108, 208, 930 किमी है शुक्र की घूर्णन की दिशा में अत्यधिक विशेषता है। सौरमंडल के अन्य सभी ग्रह इसी प्रकार अर्थात पश्चिम से पूर्व की ओर घूमते हैं। शुक्र एकमात्र ऐसा ग्रह है जो विपरीत दिशा में पूर्व से पश्चिम की ओर गति करता है। परिणामस्वरूप, शुक्र पर सूर्य पूर्व की बजाय पश्चिम में उगता है और पूर्व में ही अस्त होता है।
सूर्य की परिक्रमा करते समय सूर्य की ओर का औसत तापमान 730 डिग्री होता है।
बुध, शुक्र से अंतरग्रही है। शुक्र ग्रह से बुध को केवल सुबह और शाम के समय ही देखा जा सकता है। यहां तक ​​कि शुक्र का भी कोई चंद्रमा नहीं है।
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