gravity separation is an attractive unit operation as it generally has low capital and operating costs uses few if any chemicals that might cause environmental concerns and the recent development
going out with a bang two small nasa probes that flew in formation to precisely map the moon's gravity field crashed into a mile-high mountainside monday slamming into the lunar surface at more
gravitational-wave astronomy is a branch of observational astronomy that uses gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs neutron stars and black holes; and events such as supernovae and the formation of the early universe shortly after
russell hulse and joseph taylor who discovered the stars also showed that over time the frequency of pulses shortened and that the stars were gradually spiralling towards each other with an energy loss that agreed closely with the predicted energy that would be radiated by gravitational waves.
gravity separation is an industrial method of separating two components either a suspension or dry granular mixture where separating the components with gravity is sufficiently practical: i.e
gravitational microlensing is an astronomical phenomenon due to the gravitational lens effect. it can be used to detect objects that range from the mass of a planet to the mass of a star regardless of the light they emit.
the voice of hal 9000 the murderous computer at the heart of the spacecraft discovery in stanley kubrick's landmark "2001: a space odyssey" was provided by canadian actor douglas rain (march 13
astronomers discover two supermassive black holes in a death spiral. about 2.5 billion light years away the mammoth black holes have begun the danse macabre.
gravity - gravity - newton’s law of gravity: newton discovered the relationship between the motion of the moon and the motion of a body falling freely on earth. by his dynamical and gravitational theories he explained kepler’s laws and established the modern quantitative science of gravitation.
to calculate the force of gravity on the moon one must also know how much weaker it was at the moon's distance. newton showed that if gravity at a distance r was proportional to 1/r 2 (varied like the "inverse square of the distance") then indeed the acceleration g measured at the earth's surface would correctly predict the orbital period t of the moon.