Analyze and interpret data to determine scale properties of objects in the solar system.

  1. Space

    Searching for alien life

    A robot rover practices looking for alien life by trekking across the world's driest desert.

  2. Space

    Burst busters

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

  3. Planets

    Ringing Saturn

    The Cassini spacecraft has arrived at Saturn to start exploring the planet and its rings and moons.

  4. Planets

    Catching a Comet’s Tail

    A closeup visit by a NASA spacecraft helps show how a comet gets its shape.

  5. Space

    Asteroid lost and found

    A long-lost asteroid that came close to Earth in 1937 has been spotted again.

  6. Space

    Big galaxy swallows little galaxy

    Astronomers find a convincing case of a large galaxy caught in the act of eating a smaller one.

  7. Planets

    A planet from the early universe

    Astronomers have found the oldest and most distant planet known in the universe.

  8. Planets

    A planet’s slim-fast plan

    A planet orbiting very close to its sun can quickly lose weight.

  9. Space

    A galaxy far, far, far away

    Astronomers have glimpsed some of the most distant galaxies yet found.

  10. Space

    Black holes that burp

    Some black holes in outer space may actually spit out as much material as they suck in.