Mysterious, ultra low-frequency noises detected in Earth’s atmosphere — and scientists can’t explain them
Solar-powered balloons detected strange rumblings at a height of 70,000 feet above the Earth's surface. Scientists can't identify them.
Scientists discover secret ‘symmetries’ that protect Earth from the chaos of space
A new analysis of chaos in the solar system reveals how planetary collisions are avoided over billions of years.
How did Earth’s continents form? Leading theory may be in doubt
New research ultimately poses more questions than it answers.