Space & the Universe
A Black Hole Born Sans a Supernova?
A supergiant star's mysterious disappearing act has scientists questioning the standard theories of black hole formation.
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Interview with Astronaut Don Pettit
We talk to Don about scary moments in space, immigrating to Mars, human spaceflight and more.
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Why is "C" the speed of light?
We get all sorts of questions in our "Ask a Physicist" inbox, (including a positively disheartening number from people who seem to think it's "Ask a Psychic") but one topic that consistently seems to spark people's imagination and curiosity is the sp..
Einstein's Dreams Review
Einstein's Dreams takes the reader on a journey through different conceptions of time. What if time stood still? What if time slowed down on the highest mountain peaks? Find out why this modern classic is a must-read for those looking to dabble in physics, philosophy, or psychology.