Minutes before it was scheduled to launch, the first commercial mission of Europe's new heavy-lift rocket Ariane 6 was called off on Monday due to an "anomaly" on the ground. It was the latest of ...

Earth's deepest gravitational anomaly, known as the "gravity hole," lies 1,200 km southwest of India in the Indian Ocean. Spanning 3.1 million square kilometres, this region's sea level is 348 ...