The halo of the Milky Way is an extended and roughly spherical region, sparsely populated by stars, that surrounds the Galactic disc. The halo mainly contains stars of old ages and low metal content. The orbits of these stars can Read More …
The Hall Thruster In space, expelling a plume of high speed mass is the only way to propel a spacecraft towards a desired destination. This plume exerts a reaction force on the spacecraft called the thrust force. Thrust acts in Read More …
Double black hole mergers strongly dominate the gravitational wave signals which are being detected by LIGO/Virgo instruments. So far, over 50 confirmed black hole – black hole mergers has been publicly announced together with the basic parameters estimates such as Read More …