![]() ![]() ![]() The Standard Model has also been used to predict the existence of previously unknown particles. We do have something called the Standard Model of particle physics, which is very good at explaining the interactions between subatomic particles. ![]() Would probing deeper uncover particles even more fundamental? We don't know for sure. And we know that protons and neutrons are made up of smaller particles known as quarks. We know matter is made up atoms, and atoms are made up of protons, neutrons, and electrons. (If you’re wondering why head-scratchers like dark matter and dark energy aren’t on the list, it’s because they were in our earlier story on the Five Biggest Questions about the Universe.) 1. What follows is a brief tour through seven of the biggest unsolved problems in physics. Daniel Whiteson, a University of California physicist and the co-author of the new book "We Have No Idea: A Guide to the Unknown Universe." “There are basic facts about the universe that we’re ignorant of,” says Dr. And yet physicists today are the first to admit they don’t have all the answers. But once he was up to speed, Newton would no doubt applaud what modern physics has achieved - from the discovery of the nature of light in the 19th Century to determining the structure of the atom in the 20th Century to last year’s discovery of gravitational waves. ![]()
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