The Mithila STEM Prof Dr S K Karn

14/10/2025

i have just been recognized with The Brain Maze as one of their rising engagers! 🎉

05/10/2025

02/10/2025

21/08/2025

Chandras Centre for Research and Development (CCRD), Rohini, New Delhi - 89.

Prof (Dr) S K Karn,
LL.B.; Ph.D. (Delhi Univ).

Advisor; Director (CCRD); Professor & Researcher-High Energy Physics, Relativity, Quantum Mechanics, Gravity; Former DEAN, HOD, COE; Visiting Scientist / Fellow at INSA & HRI; SBSR Professor at Sharda University; Recipient of Awards/Grants from prominent organizations including DST, AICTE, CSIR, AKTU, BU, Delhi University & esteemed institutions in France, Switzerland, Spain, Italy, Germany & USA.

06/04/2025

So, here's a simple explanation of how it works 👇🏻

Think of Gaia as a super-precise space camera that continuously scans the sky, capturing the exact positions of stars, just like your phone’s panorama mode—but far more advanced. However, Gaia doesn’t just take one snapshot. It observes each star multiple times over years, tracking even the tiniest movements.

Have you ever noticed how objects nearby seem to shift positions when you move your head, but distant objects remain still? This effect, called parallax, is what Gaia uses to measure how far stars are. As Earth orbits the Sun, Gaia sees stars from slightly different angles. By carefully measuring this tiny shift, astronomers can calculate the exact distances to stars—something that was incredibly difficult before Gaia.

Stars are not just sitting still—they are constantly moving through space. Gaia can detect even the slowest drifts of stars across the sky. By tracking their movement over time, it helps us understand the history and future of the Milky Way, showing how stars are moving and where they came from.

Besides position and motion, Gaia also measures the brightness and colors of stars. This helps scientists determine a star’s temperature, composition, and age, giving us a clearer picture of the different types of stars in our galaxy.

This way, Gaia has constructed the largest, most precise three-dimensional map of the Milky Way, offering an unparalleled view of our home galaxy.

08/01/2025

08/01/2025

03/01/2025

🚨 Mark your calendars, sky gazers 🌌

One of the most breathtaking astronomical events of the year is almost here, and you won’t want to miss it. This January, six of the seven planets in our solar system will be visible at the same time! Among them, Venus, Mars, Jupiter, and Saturn will be easy to spot with the naked eye, putting on a show that’s perfect for stargazers of all levels.

Although the planets are already visible in the night sky, the best part of the planet parade begins on January 8. On this date, the crescent Moon will rise high in the evening sky, adding a magical touch to the planetary lineup.

As twilight fades, look toward the southwestern horizon. There, you’ll spot Venus and Saturn appearing close together. Venus, the brighter of the two, will be unmissable.

Higher in the sky, you’ll find Jupiter, the second brightest speck of light in the night sky after Venus. Jupiter recently passed its opposition, making this one of the best times of the year to observe the gas giant with the naked eye.

Near the eastern horizon, Mars will shine brightly with its signature red hue, making it a captivating sight in the night sky. January is the best month of the year to observe the Red Planet, as it will steadily grow brighter leading up to its closest approach to Earth in over two years on January 12.

Uranus will be positioned near Jupiter, and Neptune will be close to Venus and Saturn. You will need optical aid to see both these ice giants as their magnitude is beyond the naked eye limit.