News in Brief

  1. Chemistry

    Nuclear bomb debris can reveal blast size, even decades later

    Measuring the relative abundance of various elements in debris left over from nuclear bomb tests can reveal the energy released in the initial blast, researchers report.

    By Thomas Sumner
  2. Planetary Science

    The Juno spacecraft is now in orbit around Jupiter

    NASA’s Juno spacecraft successfully entered orbit around Jupiter, beginning a 20-month investigation of the giant planet’s interior.

    By Christopher Crockett
  3. Planetary Science

    Mars once had many moons

    Mars' moons might be the only two left of a larger family of satellites that helped them form in the wake of an asteroid collision.

    By Christopher Crockett
  4. Neuroscience

    Rewarding stimulation boosts immune system

    Activating feel-good nerve cells boosts mice’s immunity, a new study suggests.