Sign in

Physics

The laws and structures that define the universe.

  • Water surface ripples showing wave patterns formed by oscillations and light reflection.

    Understanding waves and energy

    Waves transfer energy from one place to another and appear in many forms, from ocean swells to light and sound.

  • Spheres arranged in a circular pattern floating against a dark background, illustrating orbital motion.

    How gravity shapes the universe

    Gravity shapes the structure of the universe, influencing everything from falling objects to the motion of galaxies.

  • Dense star cluster with many bright stars in a dark region of space.

    The search for dark matter

    Astronomers believe most of the universe's matter is invisible. Dark matter remains one of the greatest unsolved mysteries in modern physics.

  • Glowing red sphere of light against a dark background with a soft halo effect.

    Why we never really touch anything

    We never truly touch anything. What we experience as contact is actually the result of electromagnetic forces preventing atoms from overlapping.