Society for Science & the Public, which publishes Science News, uses cookies to personalize your experience and improve our services. For more information on how we use cookies on our websites, visit our Cookie Policy.
Feature Physics

The Ultimate Clock

Keeping precise time on the universe’s scale

By Charles Petit

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Physics

  1. planet burning up near star illustration
    Space

    Red giant stars that eat planets might shine less brightly

    By Lisa Grossman
  2. illustration of orbiting black holes
    Quantum Physics

    Quantum mechanics means some black hole orbits are impossible to predict

    By Emily Conover
  3. High-temperature superconductor
    Physics

    A mysterious superconductor’s wave could reveal the physics behind the materials

    By Emily Conover
  4. quasar illustration
    Space

    Quasar winds with record energy levels were seen fleeing a distant galaxy

    By Lisa Grossman
  5. Albert Einstein
    Physics

    Einstein’s letters illuminate a mind grappling with quantum mechanics

    By Tom Siegfried
  6. Milky Way dark matter glow illustration
    Space

    A controversial X-ray glow didn’t show up in the Milky Way’s dark matter halo

    By Lisa Grossman
  7. Particle Physics

    Particles called axions could reveal how matter conquered the universe

    By Emily Conover
  8. Environment

    Legos may take hundreds of years to break down in the ocean

    By Maria Temming

From the Nature Index

Paid Content