SpaceX is carrying out one of the largest in-orbit reshuffles in the short history of commercial spaceflight, pulling thousands of Starlink satellites into lower paths around Earth after a close call ...

Earth's orbiting satellites are commonly regarded as if they were suspended in mid-air. It is a fact that they actually experience a state of continuous free fall. This implies that they fall toward ...

Low Earth orbit is no longer a quiet frontier. With thousands of commercial spacecraft circling just a few hundred kilometers ...

Right angle Illustration of 2M1510 showing the orbits of the two brown dwarfs (in blue) and that of the planet (in orange). (Courtesy: ESO/L Calçada) The first strong evidence for an exoplanet with an ...