This Mysterious Cosmic Substance May Be Older Than the Universe Itself—And It Just Might Be Immortal

It drives the movements of stars and galaxies, but dark matter is invisible. While it remains a colossal mystery, a study revealed how staggering its age could be.

View in Browser  SHOP EXCLUSIVE SUBSCRIBE This Mysterious Cosmic Substance May Be Older Than the Universe Itself—And It Just Might Be Immortal It drives the movements of stars and galaxies, but dark matter is invisible. While it remains a colossal mystery, a study revealed how staggering its age could be. Read More Consciousness Isn't Just in Your Head—It May Be Altering Reality Itself, Scientists Say What if your mind is shaping the world around you in ways you can't see ... or even imagine? Read More Mathematicians Wrote a Proof for a 100-Year-Old Problem—and May Have Just Changed Geometry The work has been deemed "spectacular progress" by giants of the field. Read More Even Buying American Won't Keep You Safe From Car Tariffs One major auto company's CEO said the tariffs will "blow a hole" in the industry. Read More A College Student Accidentally Broke the Laws of Thermodynamics The discovery doesn't have any practical applications right now, but so what? It's still cool. Read More A Student Had a Hunch About a Stone Circle. Turns Out a 3,700-Year-Old Ritual Site Was Beneath It. George Bird knew there had to be more to the six-foot-tall standing stone. Read More Need Assistance? Contact Us. Follow Us Unsubscribe | Privacy Notice | CA Notice at Collection Popular Mechanics is a publication of Hearst Magazines. ©2025 Hearst Magazine Media, Inc. All Rights Reserved. This email was sent by Hearst Magazines, 300 West 57th Street, New York, NY 10019-3779