There Are Scars in Our Universe That Could Unlock Time Travel, Physicists Say

Einstein's theories support the science behind this time-travel loophole. But could it actually work?

View in Browser  SHOP EXCLUSIVE SUBSCRIBE There Are Scars in Our Universe That Could Unlock Time Travel, Physicists Say Einstein's theories support the science behind this time-travel loophole. But could it actually work? Read More Scientists Think An Ancient Interloper Once Disrupted Our Entire Solar System And it could come back one day. Read More Scientists Invented Molecular 'Chainmail' That's Way Stronger Than Kevlar Who will invent molecular jousting? Read More Scientists Once Thought These 'Little Red Dots' Broke Cosmology. Now, They're Not So Sure. The James Webb Space Telescope continues to provide as many questions as it does answers. Read More Scientists Used a 'Forbidden Fried Egg' to Measure Quantum Geometry Sometimes, working backward pays off. Read More This Greenworks Chainsaw Now Has a Huge 43% Price Cut on Amazon The kit also comes with two beefy batteries, a dual-port rapid charger, and a blade scabbard to keep for safe storage. 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