News

  1. Astronomy

    NASA’s exoplanet count surges past 5,000

    With a new batch of 60 confirmed exoplanets, the number of known worlds in our galaxy reaches another milestone.

    By Liz Kruesi
  2. Astronomy

    The universe’s background starlight is twice as bright as expected

    Images from the New Horizons spacecraft suggest that light from all known galaxies accounts for only half of the cosmos’ visible background glow.

    By Liz Kruesi
  3. Planetary Science

    Diamonds may stud Mercury’s crust

    Billions of years of meteorite impacts may have flash-baked much of a primitive graphite crust into precious gemstones.

    By Nikk Ogasa
  4. Climate

    Smoke from Australia’s intense fires in 2019 and 2020 damaged the ozone layer

    Massive fires like those that raged in Australia in 2019–2020 can eat away at Earth’s protective ozone layer, researchers find.