5 undeniable, truthful facts about dark matter | by Ethan Siegel | Starts With A Bang! | Oct, 2025
Dark matter has never been directly detected, but the astronomical evidence for its existence is overwhelming. Here’s what to know.
Every so often, advocates of a fringe theory — one that doesn’t fit the evidence as well as the mainstream theory — do what they can to breathe life back into it. Sometimes new evidence has come to light, legitimately challenging the mainstream theory and demanding that previously discarded alternatives be re-evaluated. Sometimes, a surprising set of observations supports a once-discredited theory, bringing it back into prominence. And at other times, it isn’t new data that elevates a contrarian viewpoint, but rather a false narrative is the culprit, as disingenuous arguments that have been rightfully dismissed by mainstream professionals suddenly take hold among either a new generation of inexperienced individuals, or outsiders who haven’t been exposed to the wide array of mainstream facts that supports the consensus position.
Unless you yourself have the necessary expertise to diagnose what’s being presented accurately and fully, it’s virtually impossible to tell these scenarios apart. Over the past few years, these disingenuous arguments have gotten more and more popular. One example is a well-known contrarian physicist…
