In spite of these misgivings, there is nothing in Einstein's theory of space, time and gravitation to forbid journeying into the past, a possibility that Einstein himself hated.
In the past, solar eclipses have helped test such things as Albert Einstein's theory of relativity.
Sure enough, this light was bent by the mass of the sun, confirming Einstein's theory.
This proved a key part of Einstein's theory of relativity for the first time.
"We're testing Einstein's theory in a region where it has never been tested before, " said Dr. Freire.
In 1905, Albert Einstein's theory of relativity showed that there is no such thing as absolute time.
The team managed to show that Einstein's theory could give the correct orbital behaviour of the binary orbit.
Einstein's theory was first and dramatically confirmed during a solar eclipse within four years of its publication, making him an instant celebrity.
Some physicists would rather fiddle with Einstein's theory of relativity, for instance by making gravity weaker at extremely long ranges.
Its fine-scale measurements will even permit scientists to conduct some strenuous tests of General Relativity - Einstein's theory of gravity.
The effect is a direct consequence of Einstein's theory of general relativity which tells us that space is warped by the presence of mass.
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Niels Bohr, a godfather of quantum mechanics, became embroiled in arguments with Einstein over the theory's interpretation, which Bohr found upsetting.
Einstein's theory holds that matter and energy distort space, and massive bodies such as planets and stars travel in this warped space.
Not only wormholes, but several other mechanisms have been found that, according to Einstein's theory, can be used to travel back in time.
Einstein's theory suggests the stars' orbital periods the time they take to go around each other ought to shrink by about eight-millionths of a second per year.
At the time Einstein proposed his Theory of General Relativity, it had not been observationally established that the universe was in a state of expansion.
But scientists have been trying to pin down precisely at what point Einstein's theory breaks down, and where an alternative explanation would have to be devised.
The discovery of quantum mechanics and Einstein's theory of relativity, vital to much of modern technology and economic activity, including the transistor, the laser and the atomic bomb.
One example of which the White House is fond is the atomic clock the Pentagon helped Harvard to develop so that scientists could test Einstein's theory of relativity.
Instead of using Newton's theory of gravity to examine why fast-moving stars remain within their galaxies, the pair applied general relativity, Einstein's theory of gravity, to the problem.
Einstein's theory of relativity unified these and created a four-dimensional space that is an analogue to our three-dimensional space, except that the "distance" between two points need not be positive.
Albert Einstein published his theory of general relativity in 1916, offering a description of gravity, space and time that transformed how scientists understand the physical laws governing the known universe.
WSJ: Researchers Spent $750 million��and 52 Years��Affirming Theory of Relativity
The gravitational field between the two black holes was so strong that it had never been possible to test Albert Einstein's theory of General Relativity in such an extreme situation.
"From Einstein's theory of gravity, that is his general relativity theory, we believe mass curves space and this can cause light to follow a curved path, " he told BBC News Online.
Scientists have sought to verify Einstein's theory ever since.
WSJ: Researchers Spent $750 million��and 52 Years��Affirming Theory of Relativity
In fact, the relativistic offset correction Easton applied to that satellite is still used by every GPS satellite now in orbit, and it also helped to experimentally verify Einstein's theory of relativity for good measure.
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"Einstein's theory of general relativity tells us that mass bends space and time, so when light comes toward us through the Universe, if it passes some dark matter, its light gets bent and the image we see gets bent and distorted, " Dr Heymans told the meeting.
The physicist Robert Millikan (who showed minor confirmation bias in his own work on the charge of the electron by omitting outlying observations that did not fit his hypothesis) devoted more than 10 years to trying to disprove Einstein's theory that light consists of particles (photons).
Scientists have subjected Albert Einstein's famous theory of gravity to its toughest real-world test so far and it has prevailed.
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