Physicists often say space-time “exists,” but what does that really mean? A hidden confusion between happening and being could be warping our view of reality.
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Quantum information theory is the field behind quantum computing, but experts in this field are also applying their way of thinking to some big questions in quantum physics.
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.
Your experience of time is relative because it depends on motion – more specifically, your speed and acceleration.
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.
The scariest beast in the universe has an insatiable appetite and shreds its victims.
Top contributors
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Professor, Philosophy of Science, The University of Melbourne
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University Distinguished Professor of Astronomy, University of Arizona
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Professor of Physics, Elizabethtown College
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Research Scientist, SETI Institute
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Professor of Astrophysics, University of Sydney
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Observatory Manager and Instructor, Astronomy, University of Saskatchewan