How to test the twin paradox without using a spaceship

Forget about anti-ageing creams and hair treatments. If you want to stay young, get a fast spaceship. That is what Einstein's Theory of Relativity predicted a century ago, and it is commonly known as "twin paradox".

Silence in the sky—but why?

(Phys.org) —Scientists as eminent as Stephen Hawking and Carl Sagan have long believed that humans will one day colonise the universe. But how easy would it be, why would we want to, and why haven't we seen any evidence ...

The Wikipedia paradox: Who's telling the truth?

People are less likely to trust a poorly written article if the visual cues suggest it comes from Wikipedia. Presented with the same information in an alternative layout, their trust will be greater. The presence of serious ...

New species appear to arise from sudden changes

(Phys.org)—Folmer Bokma, researcher at Umeå University, explains that living species have a limited ability to adapt to the environment. His results suggest that species do not change gradually, as the modern evolutionary ...

New research eclipses existing theories on the Moon formation

The Moon is believed to have formed from a collision, 4.5 billion years ago, between Earth and an impactor the size of Mars, known as "Theia." Over the past decades scientists have simulated this process and reproduced many ...

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