Ashley Yeager

All Stories by Ashley Yeager

  1. Cassini and Saturn
    Planetary Science

    In ‘grand finale,’ Cassini spacecraft sets off on collision course with Saturn

    The Cassini spacecraft will plunge into Saturn’s atmosphere and disintegrate on Sept. 15, but is slated to do some solid science before its demise.

  2. Titan magic island
    Planetary Science

    Nitrogen fizz fuels ‘magic island’ on Titan, simulation suggests

    Nitrogen bubbles may be the source of the “magic island” on Saturn’s moon Titan.

  3. Titan magic island
    Planetary Science

    Bubbles may put mysterious fizz in Titan’s polar sea

    Nitrogen bubbles may be the source of the “magic island” on Saturn’s moon Titan.

  4. Enceladus’ plume
    Planetary Science

    Food for microbes found on Enceladus

    The underground ocean of Saturn’s moon Enceladus harbors an abundance of molecular hydrogen, which could be an important source of food if microbial life exists there.

  5. Jupiter's cold spot
    Planetary Science

    Jupiter’s Great Red Spot has company. Meet the Great Cold Spot

    A previously unidentified dark mark on Jupiter has been dubbed the “Great Cold Spot” because of its temperature and resemblance to the planet’s Great Red Spot.

  6. composite image of stellar nursery

    Squabbles in star nurseries result in celestial fireworks

    Images from the ALMA observatory in Chile reveal that early days of stars can be just as fiery as their death.

  7. Galaxy ZF-COSMOS-20115

    Massive red, dead galaxy spotted in young universe

    A hefty red, dead galaxy may raise questions about how galaxies formed in the early universe.

  8. MAVEN probe
    Planetary Science

    Extreme gas loss dried out Mars, MAVEN data suggest

    Over the planet’s history, the Martian atmosphere has lost 66 percent of its argon and a majority of its carbon dioxide, according to data from NASA’s MAVEN spacecraft.

  9. quasar 3C 186

    Supermassive black hole gets kicked to the galactic curb

    Gravitational waves may have given a supermassive black hole a big kick, with enough energy to send it flying toward the edges of its host galaxy.

  10. Pluto
    Planetary Science

    It’s time to redefine what qualifies as a planet, scientists propose

    Astronomers can have their definition of a planet, but some planetary scientists plan to stick to the long-held meaning of the word.

  11. Pluto's hazy horizon
    Planetary Science

    How Pluto’s haze could explain its red spots

    Pluto’s collapsing atmosphere may explain the dwarf planet’s seemingly random ruddy spots.

  12. comet 67P

    Close pass by sun didn’t radically alter comet 67P’s landscape

    Landslides on comet 67P shot plumes of dust into space, but changes like these might not radically alter the landscape of the comet.