China launches “Tianhe” module for its space station

Context: China launched an unmanned module containing what will become living quarters for three crew on a permanent space station that it plans to complete by the end of 2022. Relevance: GS-III: Science and Technology (Space technology, Developments in Science and Technology), Prelims Dimensions of the Article: About China’s Tiangong Space Station About Tianhe About […]

Space Technology and Telescopes for UPSC Exam

What is Planet? Three conditions for a celestial object to be called a ‘planet’ – it must orbit the Sun it should be massive enough to acquire an approximately spherical shape it has to ‘clear its orbit’ i.e. be the object that exerts the maximum gravitational pull within its orbit ‘Dwarf planets’, on the other […]