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Could Simple Experiments Reveal the Quantum Nature of Spacetime?
Conventional wisdom has it that putting the words “quantum gravity” and “experiment” in the same sentence is like bringing matter into contact with antimatter. All you get is a big explosion; the two...
View ArticleA Journey Into Extra Dimensions
In this video pencast, theorist Delia Schwartz-Perlov explains what physicists are really talking about when they talk about extra dimensions of space. Could our universe actually contain unseen...
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Is the Standard Model as Good as it Gets?
We all dream of finding the one: dependable, motivated, and beautiful, “the one” has it all. But can the search for perfection keep us from appreciating the good thing we already have? I’m talking, of...
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Is There Anything Beyond Quantum Computing?
A quantum computer is a device that could exploit the weirdness of the quantum world to solve certain specific problems much faster than we know how to solve them using a conventional computer. Alas,...
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Can Fossils of Inflation Provide Quantum Gravity Clues?
As a science writer, it’s alarmingly easy to overstate a scientific discovery’s importance. I often must go out of my way to dial back the enthusiasm, mercilessly editing out words like...
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Are White Holes Real?
Sailors have their krakens and their sea serpents. Physicists have white holes: cosmic creatures that straddle the line between tall tale and reality. Yet to be seen in the wild, white holes may be...
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Are Space and Time Discrete or Continuous?
Split a mile in half, you get half a mile. Split the half mile, you get a quarter, and on and on, until you’ve carved out a length far smaller than the diameter of an atom. Can this slicing continue...
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Are Singularities Real?
It’s hard to imagine infinity: something that is, by definition, larger than everything you can imagine. Physicists have to deal with the unimaginable every day, and have the tools to do so. But does...
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Why Quantize Gravity?
A good question is one that you know has an answer—if only you could find it. What’s her name again? Where are my keys? How do I quantize gravity? We’ve all been there. Science is the art of asking...
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