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🌠 July 17, 2025 – The Perseid Meteor ShowerThe Perseid Meteor Shower, one of the most beautiful and active meteor shower...
14/07/2025

🌠 July 17, 2025 – The Perseid Meteor Shower

The Perseid Meteor Shower, one of the most beautiful and active meteor showers of the year, will begin to show increased activity on July 17, 2025.

Start of visible activity: July 17 at ~21:00 UTC

Radiant (Perseus constellation) rises: ~22:30 UTC

Best viewing window: From 00:00 to 04:00 UTC on July 18

📌 Notes:

Even though the peak of the Perseids will occur around August 12–13, meteors will already be visible from July 17 onward, especially in darker skies.

You can expect to see 10–20 meteors per hour on the night of July 17 if you're in a dark, rural area with clear skies.

सूरज के अंदर जो रोशनी की किरणें यानी फोटॉन पैदा होती हैं, वो असल में उस समय की ऊर्जा होती हैं, जो सूरज के कोर में हाइड्र...
14/07/2025

सूरज के अंदर जो रोशनी की किरणें यानी फोटॉन पैदा होती हैं, वो असल में उस समय की ऊर्जा होती हैं, जो सूरज के कोर में हाइड्रोजन एटम्स के आपस में जुड़ने से निकलती है – इसे न्यूक्लियर फ्यूज़न कहते हैं। लेकिन ये ऊर्जा तुरंत सूरज से बाहर नहीं निकलती।

सूरज का कोर इतना ज़्यादा घना और गर्म होता है कि वहां मौजूद प्लाज़्मा हर तरफ फैला होता है। फोटॉन जब वहां से निकलने की कोशिश करता है, तो वो हर कुछ मिलीमीटर पर किसी इलेक्ट्रॉन या आयन से टकरा जाता है। इस टकराव में उसकी दिशा बदल जाती है और वह फिर एक नई दिशा में निकल पड़ता है। यह प्रक्रिया अनगिनत बार दोहराई जाती है, जिसे वैज्ञानिक "रैंडम वॉक" कहते हैं। इसी कारण एक फोटॉन को सूरज के कोर से सतह तक आने में 10,000 से लेकर 1,70,000 साल तक लग जाते हैं।

जब एक बार यह फोटॉन सूरज की सतह यानी photosphere तक पहुँच जाता है, तो उसके बाद उसकी यात्रा बहुत तेज़ हो जाती है। स्पेस में कोई अवरोध नहीं होने की वजह से यह फोटॉन सिर्फ 8 मिनट 20 सेकंड में पृथ्वी तक पहुँच जाता है।

इसका सीधा मतलब है — जो धूप आज हमारी त्वचा को गर्म कर रही है, वह ऊर्जा लाखों साल पहले सूरज के दिल में पैदा हुई थी। और अब वह लंबे समय बाद हमारे जीवन में रोशनी और गर्मी लेकर आई है।

This little dot is Earth about 6 Billion kilometers away (3.7 billion miles) taken by Voyager 1, as it was leaving our s...
06/06/2025

This little dot is Earth about 6 Billion kilometers away (3.7 billion miles) taken by Voyager 1, as it was leaving our solar system. So much life in that little Pale Blue Dot 🌎

Voyager distance: Now roughly 13.9 billion miles, or 22.3 billion kilometers. 🔭

Launched: Mon, 05 Sept 1977 12:56:00 UTC

From the early 20th century to today, our understanding of the universe has grown from something unimaginably small to o...
04/06/2025

From the early 20th century to today, our understanding of the universe has grown from something unimaginably small to overwhelmingly vast. In 1922, the "Known Universe" was thought to be limited almost entirely to our own Milky Way galaxy, estimated at about 100,000 light-years across.

Back then, astronomers had just begun to realize that the Milky Way was just one galaxy among many, thanks to pioneering work by Edwin Hubble. Fast forward to the present, and the “Known Universe” now refers to the observable universe, a staggering expanse approximately 93 billion light-years in diameter.

This enormous scale reflects the light we can detect from billions of galaxies, many of which are moving away from us due to the universe’s continuous expansion since the Big Bang. Advances in telescope technology, space exploration, and cosmological theory have unveiled a cosmos far grander than ever imagined, filled with billions of galaxies, stars, and planets. This journey from a single galaxy to an expansive multiverse underscores humanity’s relentless curiosity and evolving understanding of our place in the cosmos.

Using the James Webb Space Telescope, scientists led by Professor Nikku Madhusudhan spotted two chemicals—dimethyl sulfi...
22/05/2025

Using the James Webb Space Telescope, scientists led by Professor Nikku Madhusudhan spotted two chemicals—dimethyl sulfide (DMS) and dimethyl disulfide (DMDS)—in the atmosphere of the distant planet K2-18 b, 124 light years away. On Earth, these compounds mostly come from marine life.

K2-18 b orbits a red dwarf star in the Leo constellation and sits in its star’s habitable zone. It’s 2.6 times bigger and about nine times heavier than Earth, and researchers think it may have a deep ocean.

These new findings hint that K2-18 b’s atmosphere could support life, sparking excitement among scientists. But they caution that more data is needed before confirming if life really exists there.

This discovery offers a fascinating glimpse into the possibilities beyond our solar system—and a reminder of how much we still have to learn. 🌌🔭

A century ago, in 1922, the entire known universe was thought to be just 100,000 light-years across—about the size of ou...
21/05/2025

A century ago, in 1922, the entire known universe was thought to be just 100,000 light-years across—about the size of our Milky Way.

Back then, astronomers believed our galaxy was the entire universe. They had no idea what lay beyond.
Then came the game-changer. Edwin Hubble’s discoveries in the 1920s revealed that the Milky Way was just one of countless galaxies, and the universe was expanding. Fast forward to today, and our cosmic map has exploded in size—the observable universe is now estimated to be 93 billion light-years across! 🤯

The universe didn’t physically expand that much in 100 years—we just finally realized how vast it already was. The discovery of cosmic expansion, dark energy, and the Big Bang theory completely changed our understanding. Light from galaxies billions of years away is still reaching us, showing us a universe that keeps getting bigger the more we look.

Think about this: The universe we know today is likely just a fraction of the whole thing. Beyond what we can see, space could stretch on infinitely.

A hundred years from now, how much bigger will our universe become?

16/04/2024

Mystery of The Hidden Planet of Our Solar System

Nasa Discovers 10th planet is larger than pluto

25/02/2024

जब भगवान कृष्ण ने भगवान ब्रह्मा को बताया Multiverse के बारे में | हिंदू धर्म में विविधता

02/02/2024

Pluto की नई Images को देखकर वैज्ञानिको के उड़े होश | Nasa Reveales New Images Of Pluto

06/01/2024

हम Sahara Desert को Solar Panels से क्यों नहीं ढकते?

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