Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.

  1. Animals

    We are stardust

    Everything making up Earth and what’s now living upon it — from trees and people to our pets and their fleas — owes their origins to the elements forged by ancient stars.

  2. Physics

    Closing in on fusion energy

    Scientists blasted a tiny capsule of hydrogen with laser beams, setting off a reaction that released more energy than in earlier experiments. Still, scientists remain a long way from creating a reaction that releases more energy than it needs to get started.

  3. Kids’ ingenuity honored at Intel ISEF

    Young scientists receive awards in international competition.

  4. Space

    A curious cosmic explosion

    A bright blowup far, far away keeps astronomers guessing.

  5. Earth

    Quake leaves destruction, fear

    In Japan, an earthquake started a tsunami that caused a nuclear disaster.

  6. Space

    Burst busters

    A powerful type of explosion in outer space is much more common, but not always as powerful, as astronomers had thought.