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)
Rajendra Gupta, L’Université d’Ottawa/University of Ottawa
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.
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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
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
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.
Bright, flickering galaxies called quasars were thought to pose a problem for our understanding of the cosmos – but new research shows Einstein was right yet again.
When two massive objects – like black holes or neutron stars – merge, they warp space and time.
Mark Garlick/Science Photo Library via Getty Images
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.
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.
Strangely behaving matter could one day explain some of the mysteries of space.
Solutions to Einstein’s famous equations back in the 20th century describe ‘wormholes,’ or tunnels through space-time.
Mark Garlick/Science Photo Library via GettyImages
An astrophysicist explains what wormholes are and how these theoretical space-time tunnels have popped up in the solutions to a set of decadesold equations.
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
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.
Time dilation might seem like science fiction, but it’s not. There are astronauts circling the Earth right now who are experiencing it – though luckily nowhere near as much as Buzz Lightyear.
Our curiosity about time travel is thousands of years old.
(Shutterstock)
There’s a special type of particle called a ‘tachyon’ which would have to travel faster than the speed of light. But here’s the hitch – we can’t prove tachyons even exist.
If time travel were possible, it would mean the existence of parallel timelines.
(Shutterstock)
Scientifically speaking, for time travel to exist, so must parallel timelines. This theory addresses the paradoxes that arise when studying the possibility of time travel.
Brian Finlayson, The University of Melbourne and Ray Sumner, California State University, Dominguez Hills
A total eclipse that travelled the full width of Australia in 1922 offered astronomers the chance to confirm Einstein’s theory of general relativity - and for the community to enjoy a rare spectacle.