Uncategorized

  1. Astronomy

    Magnetic-mapping mission resurrected

    The European Space Agency successfully launched Cluster II, a group of four spacecraft that will fly in tandem to generate a three-dimensional map of Earth's magnetosphere.

    By Ron Cowen
  2. Astronomy

    Spirograph in the sky

    Some 2,000 light-years from Earth, an elderly star has ejected its outer layers to form a puffy, gaseous cocoon that resembles a "spirograph" pattern.

    By Ron Cowen

  3. 19269

    This article on using magnetic fields to map and possibly treat brain disorders contrasted sharply with the article a few pages earlier about magnetic fields inducing cells to develop tumors (“Cells proliferate in magnetic fields,” SN: 9/23/00, p. 196: Available to subscribers at Cells profilerate in magnetic fields).