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Articles sur Albert Einstein

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Artist concept of Gravity Probe B orbiting the Earth to measure space-time, a four-dimensional description of the universe including height, width, length, and time. (NASA)

Gravitational distortion of time helps tell modified gravity apart from a dark force

The gravitational field can affect space and time: the stronger gravity is, the slower time moves. This prediction of General Relativity can be used to reveal hidden forces acting on dark matter.
As new and powerful telescopes gather new data about the universe, they reveal the limits of older theories. (Shutterstock)

Why Einstein must be wrong: In search of the theory of gravity

Einstein’s theory of general relativity suggests that our universe originated in a Big Bang. But black holes, and their gravitational forces, challenge the limits of Einstein’s work.
Galaxy NGC 6822, neighbouring the Milky Way galaxy, being studied to learn more about stars and dust in the early universe. (NASA/James Webb Space Telescope)

How old is the universe exactly? A new theory suggests that it’s been around for twice as long as believed

A new hypothesis suggests that the universe may be twice as old as we had believed. Observations from the James Webb Space Telescope provide new information on the rate of the universe’s expansion.
Creativity involves generating something new – a product or solution that didn’t previously exist. Maestria_diz/iStock via Getty Images

AI scores in the top percentile of creative thinking

Researchers had college students and AI take a standardized test in creative thinking, and all of them were scored by trained evaluators who didn’t know in advance that some had been completed by AI.
Visitors to the Hiroshima Peace Memorial Museum in Hiroshima view a large-scale panoramic photograph of the destruction following the 1945 bombing. Carl Court/Getty Images

Hiroshima attack marks its 78th anniversary – its lessons of unnecessary mass destruction could help guide future nuclear arms talks

The United States and Russia, the two biggest nuclear powers, have no imminent plans for talks on a nuclear deal. That should change, writes a former US diplomat.
Lise Meitner, in the front row, sits alongside many male colleagues at the Seventh Solvay Physics Conference in 1933. Corbin Historical via Getty Images

Female physicists aren’t represented in the media – and this lack of representation hurts the physics field

The trailer for ‘Oppenheimer’ fails to include female physicists, which is indicative of a broader media trend that, if reversed, could lead to greater gender diversity in science.
Artist’s rendition of a concentration of small black holes in the centre of the galaxy NGC 6397. ESA/Hubble, N. Bartmann.

How could we detect atom-sized primordial black holes?

Black holes can have a mass equivalent to that of millions of suns. Other, smaller, black holes can combine the mass of Mount Everest into the size of an atom.
When two particles are entangled, the state of one is tied to the state of the other. Victor de Schwanberg/Science Photo Library via Getty Images

What is quantum entanglement? A physicist explains the science of Einstein’s ‘spooky action at a distance’

A multitude of experiments have shown the mysterious phenomena of quantum mechanics to be how the universe functions. The scientists behind these experiments won the 2022 Nobel Prize in physics.
Rosa Luxemburg, the Polish-born German revolutionary and co-founder of the German Communist Party, addressing a meeting in Stuttgart, Germany, in 1907. She was assassinated in January 1919. Universal History Archive/Getty Images

Russia’s antisemitism aimed at Ukraine’s Zelenskyy is just the Kremlin variant of a very old European virus

Antisemitism has been used as a weapon against leading Jewish politicians in Europe for over a century – no matter how assimilated they were. Ukraine’s Volodymyr Zelenskyy is no exception.

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