Might a brand new, fifth pressure of nature present some solutions to our greatest questions on darkish matter and darkish power? We’re engaged on it.
The Commonplace Mannequin is, for all intents and functions, the supreme accomplishment of recent physics. It describes 4 forces of nature, a zoo of particles, and the way all of them work together. It’s maybe probably the most profitable scientific concept of all time.
And it’s fantastically incomplete.
It seems that the Commonplace Mannequin is ready to account for lower than 5% of all of the matter and power within the cosmos. One other 25% or so is Darkish Matter, an unknown form of matter that’s for all intents and functions invisible. The remaining is named Darkish Vitality, a mysterious entity that’s inflicting the enlargement of the universe to speed up.
One of many first issues astronomers seen after they first found darkish matter and darkish power was their obvious similarity. Why on the earth are the 2 darkish elements of our universe roughly the identical energy? I do know, 25% and 70% don’t sound very related, however in terms of astronomy – and particularly cosmology – they’re principally the very same quantity.
Possibly it’s only a coincidence that they’ve about the identical energy, and we’re overthinking it.
Or possibly it’s one thing else. Intelligent physicists have proposed connections throughout the “darkish sector” of the universe, the place darkish matter and darkish power speak to one another. This may permit them to observe one another’s evolution, making certain that they’ve roughly equal contributions to the power funds of the universe for lengthy durations of time.
To make them speak to one another, you want a pressure. However this pressure can’t be any of the recognized ones, in any other case darkish matter and/or darkish power should additionally work together with regular matter, and we might have seen extra instantly proof of them already.
So it must be a brand new pressure, a fifth pressure of nature, utterly totally different from electromagnetism, gravity, robust nuclear, and weak nuclear. Whereas concepts like this stay solely within the realm of speculation, a number of the concepts have already got names.
One title is quintessence, the fifth essence of the universe. One other is darkish photons, a particle that travels the cosmos like a photon however is, as its title suggests, darkish.
To check these concepts now we have to show to the cosmos for solutions. If a fifth pressure exists, it should be very refined. Stronger manifestations of the fifth pressure have already been dominated out by observations of galaxy clusters, the enlargement of the universe, and even the behaviors of neutron stars. So now we have our work lower out for us – it can take a very huge quantity of knowledge to tease out some sign that differs from expectations.
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