Science
How Rockets Reach Orbit: Speed, Stages and Why Space Is Hard
Space is only about 100 km up, a short drive horizontally. So why do rockets need to be so enormous? The answer is that reaching space is ea...
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Science
How Chandrayaan-3 Landed on the Moon: The Engineering of a Soft Landing
On 23 August 2023, ISRO's Chandrayaan-3 lander Vikram touched down near the Moon's south polar region, making India the first countr...
AI
How AI Image Generators Turn Words Into Pictures
Type "a red double-decker bus on a rainy Mumbai street at night" and seconds later you have a detailed picture that never existed....
AI
How Deepfakes Are Made, and 9 Ways to Spot a Fake Video or Voice
A video of a celebrity endorsing an investment scheme. A voice note from your boss urgently asking for a payment. A clip of a politician say...
AI
Passkeys Explained: Why Your Passwords Are Being Replaced
Google, Apple, Microsoft, banks and shopping sites are now asking you to "create a passkey". It is the biggest change to how we lo...