In fact, the definition of a planet is a celestial body which orbits around a star. The moon, is only a quarter the size of the Earth. Gravity holds it in an ongoing embrace, its orbit taking ...

London is seen from the ISS via Sen’s onboard 4k cameras. (Credit: Sen) ...

When Poh Gang Kai left Singapore to study astronomy 15 years ago, he never dreamed he would one day work at NASA. Now, he ...