Dark matter is believed to make up more than 80 percent of all matter in the universe, but what it actually is remains a mystery. Now, astronomers have found something that gives us a major clue. In a ...

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Dark matter is believed to make up more than 80 percent of all matter in the universe, but what it actually is remains a mystery. Now, astronomers have found something that gives us a major clue. This ...

ET May Look Nothing Like Life on Earth. Scientists Want a Universal Theory of Life to Describe It. Sign up to receive top stories about groundbreaking technologies and visionary thinkers from ...