There’s a lot we know today that humanity didn’t know hundreds of years ago, and there will likely be a lot people will learn in the coming years that we can’t possibly know right now. Among these questions, there are some that have puzzled scientists for years, questions that, if answered, could change our understanding of reality completely.What exactly is dark matter? How did life begin? Why does consciousness exist? Why is the universe dominated by matter instead of antimatter? These questions and more represent genuine gaps in humanity’s understanding of nature. It would be a wonder if any of us are alive by the time these questions are answered.cnx.cmd.push(function() {cnx({playerId: "106e33c0-3911-473c-b599-b1426db57530",}).render("0270c398a82f44f49c23c16122516796");});Wikimedia CommonsWhat Exactly Is Dark Matter?Scientists can observe dark matter’s gravitational effects on galaxies and clusters, but they still don’t know what the substance actually is. It appears to account for roughly 27% of the universe, yet remains invisible to light.Wikimedia CommonsWhy Is the Universe Expanding at the “Wrong” Rate?Measurements using different cosmic distance methods produce conflicting estimates for the universe’s current expansion rate. This Hubble Tension has survived increasingly precise observations, leaving scientists wondering whether measurement issues or genuinely new physics explains the discrepancy.Wikimedia CommonsWhere Did All the Antimatter Go?The Big Bang should have produced matter and antimatter in nearly equal amounts, which should have annihilated almost everything. Instead, our universe is overwhelmingly made of matter. Scientists know an asymmetry exists, but not what produced it.Wikimedia CommonsHow Did Life Begin?Scientists have identified many chemical ingredients and possible environments involved in life’s emergence, but no one has reconstructed the complete transition from nonliving chemistry to the first living systems. Exactly where and how that transition occurred remains unresolved.IMDbAre We Really Alone?Thousands of planets beyond our solar system have been confirmed, including worlds roughly Earth-sized and potentially habitable. Yet Earth remains the only known world containing life. Scientists still don’t know whether life is common, rare, or unique to us.Wikimedia CommonsHow Does the Brain Create Consciousness?Neuroscience can increasingly connect brain activity with perception and behavior, but explaining how physical processes produce subjective experience remains a profound challenge. Scientists still lack a comprehensive account of how neural activity becomes the feeling of being conscious.UnsplashWhy Do We Age?Scientists have identified numerous biological processes associated with aging, including cellular senescence and changes involving metabolism and DNA, but aging is extraordinarily complex. Researchers are still working to understand how these mechanisms interact and drive the aging process.Wikimedia CommonsCan Gravity Be Reconciled With Quantum Physics?General relativity describes gravity extremely well on large scales, while quantum mechanics governs the microscopic world. Combining the two into a consistent, experimentally supported theory has remained one of fundamental physics’ most difficult unsolved problems.Wikimedia CommonsWhat Really Happens Inside a Black Hole?Astronomers can study black holes through their effects on surrounding matter and light, but the environment beyond an event horizon remains inaccessible. Scientists still don’t know what matter ultimately becomes inside these extraordinary objects.Wikimedia CommonsWhat Causes Fast Radio Bursts?Fast radio bursts are extraordinarily powerful radio flashes lasting mere milliseconds. Some are now linked to magnetars, but scientists still don’t know whether every FRB shares the same origin or what physical mechanisms produce the entire population.Wikimedia CommonsWhy Are Neutrinos So Strange?Neutrinos are extraordinarily abundant, electrically neutral particles with tiny masses that barely interact with ordinary matter. They can also change between three known “flavors.” Scientists continue studying their properties because these ghostly particles may reveal physics beyond current theories.Wikimedia CommonsWhy Is the Sun’s Corona So Hot?The Sun’s visible surface is around 10,000 degrees Fahrenheit, while its outer atmosphere can reach millions of degrees. Scientists have proposed mechanisms including waves and tiny magnetic eruptions, but no single explanation has settled the coronal heating mystery.Wikimedia CommonsCan We Ever Predict Earthquakes?Scientists can estimate earthquake probabilities for particular regions and time periods, but they cannot reliably predict an individual earthquake’s exact time, location, and magnitude. Despite extensive research, the physical processes leading to precise prediction remain beyond current capabilities.Wikimedia CommonsWhat Is Still Hiding Beneath the Ocean?More than 90% of the ocean is deep ocean, and scientists have directly observed less than 0.001% of the deep-ocean seafloor. Vast areas remain unexplored, potentially containing unknown species, geological features, and ecosystems.The post 14 of Science’s Biggest Mysteries We’re Still Trying to Figure Out appeared first on Den of Geek.