5/n The K-4 test blends cutting-edge tech with strategic deterrence. Underwater ejection, precision re-entry, and stealth integration show India’s engineering maturity. With this, New Delhi joins the elite SLBM club — a quiet game-changer in the Indo-Pacific.

4/n From K-15 Sagarika (750 km) to K-4 (3,500 km), India’s sea-based deterrent just leveled up. While K-15 required risky patrols near enemy coasts, K-4 lets subs strike from secure waters. Each test tightens India’s grip on undersea dominance.

3/n Launching K-4 from INS Arighaat makes India’s deterrence truly triad-capable — land, air, and sea. The 3,500 km range lets SSBNs stay safely in the Indian Ocean while covering key adversary targets. It’s a quiet but powerful message: credible second strike is operational.

2/n The K-4 “Kalam-4” is India’s next-gen submarine-launched ballistic missile (SLBM). It can strike targets 3,500 km away while carrying a nuclear payload. Built by DRDO for Arihant-class submarines, it ensures silent, survivable deterrence from deep waters.

1/n Big milestone for India’s nuclear deterrent. INS Arighaat successfully fired the 3,500 km–range K-4 SLBM, developed by DRDO. It strengthens India’s sea-based second-strike capability — the stealth core of its nuclear triad.

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5/n And the global significance? AST SpaceMobile’s constellation aims to kill mobile “dead zones” by offering space‑based broadband coverage to underserved and remote regions worldwide, plugging billions into the digital economy directly from orbit

4/n Why is this launch a big deal for ISRO? 🇮🇳 LVM3 is ISRO’s workhorse heavy‑lift rocket; placing a ~6.1‑tonne commercial comsat into LEO showcases its capability for high‑mass commercial missions and strengthens India’s position in the global launch market via NSIL.

3/n Think of it as a cell tower in space. Each BlueBird uses a huge unfolding phased‑array antenna and 3GPP‑compatible 4G/5G waveforms to talk to standard devices, targeting peak data speeds up to ~120 Mbps over tens of MHz of spectrum per beam

2/n So, what is BlueBird Block‑2? It’s a next‑gen “direct‑to‑mobile” satellite designed to beam 4G/5G cellular broadband directly to normal smartphones on the ground, without any special satellite phone hardware.

1/n Historic morning for Indian spaceflight. ISRO’s heavy‑lift LVM3‑M6 just launched the ~6,100 kg BlueBird Block‑2 communication satellite for US‑based AST SpaceMobile into Low Earth Orbit – the heaviest payload ever carried by LVM3 from Indian soil.

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Beauty 😍

🇮🇳ISRO’s LVM3‑M6 just lofted the 6.1‑tonne BlueBird Block‑2 comsat to LEO – the heaviest payload ever carried by India’s Bahubali rocket! 🛰️ Built by @AST_SpaceMobile this bird will beam 4G/5G broadband directly to smartphones, shrinking the global connectivity gap. @isro #ISRO

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DRDO India successfully completed User Evaluation Trials of the Next Generation Akash (Akash-NG) missile system, paving the way for its induction into the Indian Armed Forces. The system demonstrated high precision against diverse aerial threats, including high-speed,

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