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Why is Venus the freshest planet, while Mercury is nearer to the Solar? – Sejal M., age 7, Bangalore, India
When the sun gadget had simply shaped, 4.5 billion years in the past, Venus used to be almost certainly a tropical paradise. Oceans of water most probably lined its floor, and puffy clouds dotted its skies. At the moment, Mercury, the planet closest to the Solar, used to be without a doubt the freshest planet within the sun gadget.
However then the Solar grew brighter, and a sequence of occasions referred to as a runaway greenhouse impact brought on Venus’s floor temperature to leap way past Mercury’s. To make certain, as the nearest planet to the Solar, portions of Mercury are nonetheless extraordinarily scorching. Its floor temperature on its sunlit facet is round 800 levels Fahrenheit (430 levels Celsius), scorching sufficient to soften lead.
I’m an area scientist with a zeal for educating physics and astronomy. I’ve observed Venus shine brightly within the western sky simply after sundown, and, on uncommon events, observed Mercury in short seem as an “evening star.”
What’s the greenhouse impact?
Venus isn’t the one planet that has skilled a greenhouse impact. Nowadays, the similar phenomenon helps to keep Earth’s floor liveable.
The greenhouse impact traps warmth in a planet’s setting.
Heat items emit electromagnetic radiation, or gentle, as a result of their atoms and molecules are repeatedly vibrating. Earth’s…
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Author : bq3anews
Publish date : 2026-07-13 15:18:00
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