Tag: shock wave
Thunderstorms: what is the origin of thunder?
The event is well known: when the storm bursts, thunder rumbles. What is less is the way in which the electric charge of the cloud generates such noise. Here are…
Could we survive a nuclear attack?
Nuclear weapons are among the most powerful weapons that exist on Earth. And it may seem naive to think that it is possible to survive an attack. Yet studies have…
A collision of clusters of galaxies causes an “explosion” of 6.5 million light years!
The South African MeerKAT radio telescope is a precursor to the telescope Square Kilometer Array (SKA), a giant radio telescope project consisting of several interferometric networks in metric and centimetric…
Dark Matter ‘Asteroids’ Revealed in Collisions with Stars
The detection of dark matter has proven more difficult than expected, but astroparticle physicists still rely on natural giant detectors, the stars, to compensate for the weakness of terrestrial detectors.…
The protective bubble of the Solar System, the heliosphere, would be shaped by the Universe
The heliosphere is that kind of bubble that protects our entire Solar System from cosmic radiation. And for a long time, astronomers have sought to characterize it. Today, they show…