Johannes Kepler was a 16th century astronomer who established three laws which govern the motion of planets around the sun. These are known as Kepler’s laws of planetary motion. These laws describes ...

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PITTSBURGH (KDKA) - I like to take pictures and make time lapses, and a fun thing to do is take long exposure pictures. To get a long exposure, you leave the camera's shutter open for a long period of ...

Centripetal and centrifugal forces are central to circular motion, but they're not the same. Discover the differences between ...

Gravity provides the force needed to maintain stable orbit of planets around a star and also of moons and artificial satellites around a planet. For an object to remain in a steady, circular orbit it ...

A new book imagines what the world would be like if Earth spun faster and faster until days just last two hours.

New Scientist Book Club has been reading Alex Foster’s debut novel, Circular Motion, in which he charts what would happen if Earth’s rotation sped up by not just a millisecond, but a minute, or an ...