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Vacuum Energy
There are a lot of unsolved mysteries in the Universe, but dark energy is the most confusing. Here’s why. The majority of the energy in our Universe went completely undiscovered until […]
A recent headline claimed they could. But if gamma-rays are just a form of light, don’t they have to travel at light-speed? There’s an ultimate speed limit in the Universe: […]
When the Universe expands, photons redshift to longer wavelengths and lower energies. So where does that energy go? Imagine the ultimate version of a toy Universe: it’s expanding, it’s full of […]
All protons have the same exact mass as every other proton. For particles like the Higgs boson, this isn’t true. One of the most puzzling aspects of quantum physics is how […]
And does it require the idea of ‘negative gravity’ in order to work? The biggest question that we’re even capable of asking, with our present knowledge and understanding of the Universe, […]
Despite what Hawking told you, it really isn’t about particle-antiparticle pairs at all. Nothing in the Universe lives forever. All the stars that will ever form will someday burn out; distant […]
Cosmic inflation is what happened before, and set up, the Big Bang. Here’s what it’s like to live in an inflating Universe. Our Universe today is full of matter and […]
Did you hear the story about how a 100 petawatt laser will finally ‘break the quantum vacuum’? Get the facts. Empty space, as it turns out, isn’t so empty. The fluctuations […]
If you want to know how we get something from nothing, you’d better understand what we mean! When we look around at our world and Universe today, we talk and think […]
One of cosmic inflation’s cofounders came out against it, calling it not even science. But it is… and so much more. “There’s no obvious reason to assume that the very same […]
Not faster than 299,792,458 m/s, but faster than light moves through anything other than vacuum! “You are both fools. You cannot see thoughts, or angels. One is an abstract, the other […]
The force of empty space isn’t always zero. Here’s how an electromagnetic experiment might be the key to dark energy. “Another very good test some readers may want to look up… […]