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An ancient Egypt-to-Black Sea route? Adventurers to test theory
Were the ancient Egyptians able to use reed boats to travel as far as the Black Sea thousands of years ago?
Star orbiting massive black hole lends support to Einstein's theory
Observations of light coming from a star zipping in orbit around the humongous black hole at the center of our galaxy have provided fresh evidence backing Albert Einstein's 1915 theory of general relativity, astronomers said on Thursday (July 25).
Einstein's theory of relativity aces its first black hole test
More than a century has passed since Albert Einstein gave us general relativity, and scientists are still testing the mind-bending theory.
A new theory on why whales got so big
Scientists think they've figured out why the biggest whales — those of the baleen variety, including blue whales — got so big.
New theory on how Earth's crust was created
More than 90 percent of Earth's continental crust is made up of silica-rich minerals, such as feldspar and quartz. But where did this silica-enriched material come from? And could it provide a clue in the search for life on other planets?
New theory explains how Moon got there
Earth's Moon is an unusual object in our solar system, and now there's a new theory to explain how it got where it is, which puts some twists on the current 'giant impact' theory.
Proof of Einstein's theory of ripples arrives in a chirp
More than one billion years ago, a colossal storm raged in the Universe as two huge black holes collided and merged.
Iranian-led group develops new theory for Universe expansion
A team of US scientists has challenged the popular scientific model that the Universe — space, time, matter and energy — ballooned out from a very hot and dense point and inflated with a Big Bang into how we see the Universe today.
Spain says 'no theory ruled out' about missing journalists
Spain's Prime Minister Mariano Rajoy says "no theory is being ruled out" about the fate of three Spanish journalists missing in Syria.

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