Uncategorized

  1. Astronomy

    Pulsars may power cosmic rays with the highest-known energies in the universe

    Earth is pelted by energetic particles from space. The source might be the magnetic remains of massive stars, a new study suggests.

    By Liz Kruesi
  2. Cosmology

    A century ago, Alexander Friedmann envisioned the universe’s expansion

    Alexander Friedmann saw that Einstein’s equations predicted multiple cosmic scenarios, including a Big Bang.

    By Tom Siegfried
  3. Life

    Caribou gut parasites indirectly create a greener tundra

    Caribou merely sickened by parasites eat less vegetation, allowing plants to flourish.

    By Jake Buehler
  4. Science & Society

    Why some scientists want serious research into UFOs

    Science grapples with unknown phenomena all the time.