Astronomers have directly observed a free-floating planet, comparable in mass to Earth, roaming the Milky Way. Discovered via ...

Retrograde mean motion resonances occur when orbiting bodies, moving in directions opposite to the dominant sense of motion, experience periodic gravitational interactions that can stabilise their ...

Over recent decades, human exploration of planetary bodies has evolved into a complex, multidisciplinary endeavour that combines human ingenuity with advanced technology. Pioneering missions have ...