नंबर और टेक्स्ट ऑन व्हिच ऑफ कंप्यूटर वर्क इज कॉल्ड computer class 4
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Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material
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