Uncategorized

  1. Astronomy

    Astronomers may not have found a sign of the universe’s first stars after all

    A new study of radio waves from early in the universe’s history finds no hint of the “cosmic dawn” claimed by an earlier study.

    By Emily Conover
  2. Space

    How Russia’s war in Ukraine hinders space research and exploration

    A Mars rover, an X-ray telescope and several low-Earth satellites are at risk in response to international sanctions on Russia.

    By Liz Kruesi
  3. Neuroscience

    A hit of dopamine sends mice into dreamland

    New results are some of the first to show a trigger for the mysterious shifts between REM and non-REM sleep in mice.

    By Laura Sanders
  4. Health & Medicine

    How to interpret the CDC’s new mask guidelines

    Based on the CDC’s new metrics, most people no longer need to wear masks in most situations, but that could change.