Astronomy & Space
TL;DR: Infinity broadens our view of a universe without strict edges, suggesting spacetime may stretch unendingly rather than end at...
TL;DR: Yes, if we detect an incoming asteroid early enough, current and emerging planetary defense strategies could potentially deflect or...
TL;DR: The universe keeps expanding because it began in a hot, dense state and has been stretching ever since, powered...
TL;DR: We have 365 days in a year because Earth completes one orbit around the Sun in roughly that timeframe...
**TL;DR: Because of abundant cosmic material and gravitational dynamics in the early protoplanetary disk, multiple worlds were able to form...
**TL;DR: Because Mars lost its protective atmosphere and stable water supply long ago, its surface became too harsh and inhospitable...
**TL;DR: Without the Moon stabilizing Earth’s tilt, driving strong tides, and moderating day/night cycles, our planet’s climate, oceans, and even...
TL;DR: Ocean tides ebb and flow mainly due to the Moon’s gravitational pull on Earth’s waters, combined with the influence...
TL;DR: Sunlight scattering by atmospheric molecules makes shorter wavelengths—like blue—scatter more, causing our skies to appear blue. Light, Atmosphere, and...