Listening to electro-magnetic waves around the Earth, converted to sound, is almost like listening to singing and chirping birds at dawn with a crackling camp fire nearby. This is why such waves are called chorus waves. They cause polar lights but also high-energy 'killer' electrons that can damage spacecraft. In a recent study, the authors describe extraordinary chorus waves around other planets in our solar system.
Scientists clarified how gravity affects the shape of matter near the black hole in binary system Cygnus X-1. Their findings may help scientists further understand the physics of strong gravity and the evolution of black holes and galaxies.
Observations made with ESO's Very Large Telescope have for the first time clearly revealed the effects of Einstein's general relativity on the motion of a star passing through the extreme gravitational field very close to the supermassive black hole in the centre of the Milky Way.
Liquid metallic hydrogen is not present naturally on Earth and has only been created in a handful of places. Scientists are researching the properties of liquid metallic hydrogen to understand how planets both inside and outside our solar system form magnetic shields.
Using advanced algorithms and data-cleaning techniques, scientists discovered never-before-detected, fine-grained structures in the outer corona - the Sun's million-degree atmosphere -- by analyzing images taken by NASA's STEREO spacecraft.