Knowledge

The final part of our investigation into the space elevator. ← Part I: from the Tower of Babel to Tsiolkovsky’s dream Part II: how a Dream Became an Engineering Calculation ⟶ Chapter 13. The major engineering dead ends: why aren’t we in orbit yet? The turn of the millennium brought not just an understanding of […]

← Part I: from the Tower of Babel to Tsiolkovsky’s dream Part III: The Space Elevator in the 21st Century ⟶ We’re continuing our investigation into the space elevator. Chapter 8. Down to Earth: Yuri Artsutanov’s revolutionary reversal The concept Konstantin Tsiolkovsky proposed in 1895 had one fundamental weakness: it assumed building the tower from […]

← Part II: how a Dream Became an Engineering Calculation Part III: The Space Elevator in the 21st Century ⟶ Dear readers! Today’s piece isn’t a typical article — it’s a full investigation. We’ve already crossed into the second quarter of the 21st century. Once-unimaginable technologies are within reach, and we’re preparing for a flight […]

Amateur Radio Direction Finding (ARDF) is a special competitive outlet for those who want to combine the physical challenge of outdoor navigation with the technical puzzle of radio science. ARDF is an international amateur radio sport, colloquially known in many parts of the world as “fox hunting” or “transmitter hunting” . Participants use specialized radio […]

The walkie-talkie is so simple that it is generally assumed to be private as well. But is it so? Does someone listen to your conversations? Can a walkie talkie be tracked and used to reveal your location? Most importantly.To answer these questions, it’s useful to understand how these devices work in the first place. How […]

In the world of science, where the names of great men often overshadow the achievements of women, there are stories that deserve to be told with special passion and care. The story of Katharine Blodgett is one of them. Imagine Thomas Edison, whose inventions transformed everyday life—but now imagine a woman who, like him, revolutionized […]

In early 2026 astronomers announced the discovery of a new comet that could become one of the most exciting sky events of the year. The object, ☄️ Comet C/2026 A1 (MAPS), is currently racing toward the Sun on an extremely steep orbit and may put on a dramatic show for observers—if it survives its perilous […]

Moon is the best object for beginner observers and not only for them. Its close location to the Earth allows stargazers to use not too expensive telescopes and even binoculars. Moreover, you can see the biggest sights with the naked eye. Therefore, can you imagine that having a powerful telescope, you can see the famous […]