We think it’s obvious that the Earth goes around the sun, today, but back before Copernicus, detractors had the most obvious argument possible against heliocentrism. To combat this, in his argument in ...

Two satellites constructed and launched by the European Space Agency will spend the next year testing Albert Einstein’s general theory of relativity, which was proposed in a paper the famed German ...

When two Galileo global navigation satellites were launched into the wrong orbit last year, scientists decided to turn the multimillion dollar accident into the most rigorous test yet of Einstein’s ...

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Europe's fifth and sixth Galileo satellites – subject to complex salvage manoeuvres following their launch last year into incorrect orbits – will help to perform an ambitious year-long test of ...

Yesterday, I wrote about the core concepts needed to understand quantum physics, which is one of the two pillars of modern physics. The other, of course, is the theory of relativity, the full and ...

Pop quiz, hotshot. You've just launched a pair of GPS satellites into the wrong orbit, rendering them useless for navigation. What do you do? If you're the European Space Agency (ESA), you re-purpose ...