On 1 January 2026, Air Marshal Nagesh Kapoor took over as the 50th Vice Chief of the Air Staff succeeding Air Marshal Narmdeshwar Tiwari who superannuated on 31 December 2025.

Denmark's national postal service, PostNord, has delivered its final letter, marking the end of a 400-year tradition as digital communication replaces physical mail. The move makes Denmark the first country to conclude that letter delivery is no longer essential—or economically viable—in the digital age.

High , ☠ how you are?

Bihar Police Havildar Clerk Notification Out✅

https://bpssc.bihar.gov.in/Notices/Advt.%20No.-01-2026%20Havildar%20Clerk%20D.R..pdf

📍Banks of the Narmada River, Khargone district, Indore Division, Madhya Pradesh

Food poisoning kills 200 parrots in MP’s Khargone district

Wildlife warden Tony Sharma told media —

Around 25 were initially , Today crossed 200 Parrots along with several pigeons, diamond doves and sparrows were also found dead.

Jaldi aa jao sare 🐴🐯🦁
Aaj ghumne chalenge inside of the earth 🌍🦖.

Interior of earth🌏

🍀 SOURCES OF INFORMATION ABOUT EARTH’S INTERIOR

🔹 ⚡Direct Sources (Limited Use)

Mining (few km only)

Deep drilling projects

❌ Not reliable for deep interior

🔹 Indirect Sources (MOST IMPORTANT)

Seismic waves (Primary source)

Gravity anomalies

Magnetic field

Meteorites

📌 UPSC fact: Seismic waves are the most reliable source.


🌳STRUCTURE OF THE EARTH

🧱 CRUST

Outermost layer

🌿Thickness:

Continents: 30–70 km

Oceans: 5–10 km



🌴Composition:

Continental crust → SIAL (Silica + Aluminium)

Oceanic crust → SIMA (Silica + Magnesium)

🪨 MANTLE

Extends from Moho to ~2900 km

Accounts for ~84% of Earth’s volume

Rich in silicates of magnesium and iron

🔸 Asthenosphere❄️

Part of upper mantle

Semi-molten / plastic in nature

Responsible for plate movements

📌 Plastic ≠ fully molten

🔥 ) CORE🌑

Extends from 2900 km to Earth’s centre (6371 km)

Composition: Nickel + Iron (NIFE)

Outer Core🌓
Liquid state

Source of Earth’s magnetic field

Inner Core🌖

Solid state
Solid due to extremely high pressure

Discontinuity Boundary☄️

•Conrad- Upper & Lower crust
•Mohorovičić (Moho) -Crust & Mantle
•Gutenberg -Mantle & Core
•Lehmann -Outer Core & Inner Core

SEISMIC WAVES (HIGHEST WEIGHTAGE)🏖️

🔹 P-Waves (Primary)
🌊
Fastest seismic waves

Travel through solids, liquids & gases

🔹 S-Waves (Secondary)🏞️

Slower than P-waves

Travel through solids only

❌ Cannot pass through liquid

🔹 Surface Waves🌪️

Travel along Earth’s surface

Most destructive

SHADOW ZONES⛱️

S-wave shadow zone: Beyond 103° from epicentre

P-wave shadow zone: Between 103°–142°/105°-140°


☘️Significance:

Proves liquid nature of outer core

Confirms layered structure of Earth


🦞TEMPERATURE & PRESSURE INSIDE EARTH

Both increase with depth

Causes:

Radioactive decay

Residual heat

Pressure

Inner core temperature: ~5000–6000°C


🕸️EARTH’S MAGNETIC FIELD
🐾
Generated due to convection currents of molten iron in the outer core

Known as Dynamo Theory


❌ Not due to mantle convection ❌ Not due to Earth’s rotation alone

🚨CRUST THICKNESS (PYQ AREA)

Thickest under fold mountains (Himalayas ≈ 70 km)

Thinnest under oceans

🛑🚦KEY UPSC TRAPS (MUST REMEMBER)

⚓Asthenosphere = plastic, not molten

🛹Inner core = solid due to pressure

🚇Magnetic field = outer core, not mantle

🚤S-waves = liquid barrier proof

🚀Most reliable evidence = seismic waves


Ghumne se kam.nahi chalta
Pyqs bhi solve karne padte hai mittr👇👇👇👇

27 days left for Afcat exam
MAKE BEST USE OF IT✅

What to do at this time
🛑ENGLISH
Daily 1 mock+ analysis
Practice is most important in English 👍

🛑GK
REVISE REVISE REVISE
only new thing u can do at this time is your CURRENT AFFAIRS.

🛑MATHS
PRACTICE PYQ+ MOCK✅

This channel is more than just posts—it’s our effort to support you ✨
If you find our content useful or meaningful,
a simple reaction will let us know we’re on the right path 🤍
Thank you for being here 🌼❤️
To reaction hi de diya karo!🤧

The Centre has offered PRAGATI (Pro-Active Governance & Timely Implementation) platform to States with a flexibility of lowering the threshold of projects to be taken up.

Goa's Chief Minister, Pramod Sawant, has announced the creation of the state's third district, named Kushavati, after the ancient Kushavati River, linking it to historical significance, including potential ties to the Ramayana's Kosala Kingdom, with Quepem designated as its headquarters, comprising talukas like Sanguem, Canacona, Quepem, and Dharbandora.