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International · 1 hrs ago
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Could aliens ever visit Earth? An aerospace scientist unpacks the challenges of interstellar spaceflight
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An aerospace scientist explores the theoretical challenges that would make interstellar travel to Earth extremely difficult for any alien civilization, despite the vastness of the universe.
Could aliens ever visit Earth? An aerospace scientist unpacks the challenges of interstellar spaceflight
The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth. NASA, ESA, CSA, STScI, Rohan Naidu (MIT); Image Processing: Joseph DePasquale (STScI), CC BY
On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be unexplained flying objects. These file dumps were the culmination of a process that was set in motion back in July 2023, when a group of government whistleblowers testifie
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