Humans respond to environments that change at many different speeds. A video game player, for example, reacts to on-screen ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Time passes by faster on Mars than on Earth. ESA & MPS for OSIRIS Team MPS / UPD / LAM / IAA / RSSD / INTA / UPM / DASP / IDA, 2007, CC BY-SA 3.0 IGO The question “What time is it on Mars?” is far ...

"Nobody knew that before. It improves our knowledge of the theory itself, the theory of how clocks tick and relativity. The passage of time is fundamental to the theory of relativity: how you realize ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Tracking the first astronauts’ visit to Mars won’t be as simple ...

"A three-body problem is extremely complicated. Now we're dealing with four: the sun, Earth, the moon and Mars. The heavy lifting was more challenging than I initially thought." When you purchase ...

Einstein’s equations look simple on paper but when physicists follow them to their logical end, the universe becomes far stranger than anyone expected. Black holes, warped space, time dilation, and ...

110 years ago today, Albert Einstein published his General Theory of Relativity, which redefined the relationship between matter and gravity. Suddenly, our mysterious universe made a little more sense ...

Tracking time is one of those things that seems easy, until you really start to get into the details of what time actually is. We define a second as 9,192,631,770 oscillations of a cesium atom.

Relativity Space has completed a critical design review of its Terran R rocket as it works towards a first launch as soon as late 2026. Credit: Relativity Space WASHINGTON — Relativity Space, a launch ...

Recent advancements in observational techniques have led to the capture of high-resolution images of black hole shadows, which are challenging the completeness of Einstein’s general theory of ...