Astronomers have directly detected four previously hidden white dwarfs orbiting nearby red dwarf stars, solving a long-standing observational challenge and improving our understanding of how close binary star systems evolve. The newly confirmed stellar remnants lie within 20 parsecs (around 65 light-years) of the Sun and had remained concealed because their faint light was overwhelmed…

India also wants to build a new reusable rocket (representative image) For decades, launching a rocket into space followed a remarkably simple pattern: build it, launch it, use it once and throw most of it away.That model worked, but it was expensive.Now, the world’s space industry is trying to change the equation. Instead of watching…

Air filters trap biological particles along with ordinary dust and pollution, allowing laboratory sequencing to reveal environmental DNA Every breath you take carries an invisible record of the living world, and scientists have discovered a way to read it using ordinary air filters.By studying the tiny particles trapped inside standard air-quality monitoring equipment, researchers can…