There are many difficult problems and unsolved mysteries in the history of physics, among these unsolved mysteries, gravity is the greatest mystery.
This promises to be a breakthrough discovery, helping us to explain many of the mysteries of the universe including dark matter.
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178 years ago, on June 10, 1836, the heart of the great scientist André-Marie Ampère stopped.
So far, such a progress is called a science fiction dream.
Japan's magnetic track reached 590 km / h, breaking the record 12 years ago.
The US military has successfully tested a new dangerous super weapon, which can fire artillery shells at 7 times the speed of sound.