EarthSky (en inglés)

EarthSky Updates on your cosmos and world

  • Colors of scintillating Venus
    por Deborah Byrd el día 25 Marzo 2017 a las 11:01

    Venus reaches inferior conjunction today, officially leaving the evening sky. It has been low in the sky, where Earth's atmosphere has caused Venus to scintillate, or twinkle, in many colors. […]

  • New map of space dust in 3-D
    por Deborah Byrd el día 25 Marzo 2017 a las 10:00

    Sure, we're all collections of space dust. But astronomers also want to study it in order to understand how space dust in our Milky Way obscures starlight from afar. […]

  • Use Big Dipper to locate Hunting Dogs
    por Deborah Byrd el día 25 Marzo 2017 a las 07:01

    If you can find the Big Dipper, you can also find 2 Hunting Dogs - aka Canes Venatici - seen by the ancient stargazers to be nipping at the Bear’s heels. […]

  • Star of the week: Acrux
    por Larry Sessions el día 24 Marzo 2017 a las 16:00

    You have far south on Earth's globe to see the Southern Cross. Bluish Acrux, aka Alpha Crucis, is its brightest star. […]

  • Know the Big and Little Dippers
    por Bruce McClure el día 24 Marzo 2017 a las 14:03

    The Big Dipper is easy. And, once you find it, you can find the Little Dipper, too. Plus … learn how the stars of the Big Dipper are moving in space. […]

  • Perfect airplane glory
    por Deborah Byrd el día 24 Marzo 2017 a las 09:01

    You might catch an airplane glory when a mist or cloud lies below you, with the sun shining upon it. […]

  • A mysterious star called Epsilon Aurigae
    por Bruce McClure el día 24 Marzo 2017 a las 07:01

    Epsilon Aurigae's light dims for a period of about 2 years, in a 27-year cycle. The star's last dimming was from 2009 to 2011. […]

  • Venus after sunset and before sunrise!
    por Bruce McClure el día 23 Marzo 2017 a las 16:02

    The planet Venus is now appearing in the west after sunset and in the east before sunrise. Don't believe it? Astronomer Bruce McClure reports on his observation. […]

  • Record low sea ice at both poles
    por Deborah Byrd el día 23 Marzo 2017 a las 10:57

    Considering both poles in February 2017, Earth essentially lost the equivalent of a chunk of sea ice larger than Mexico, in contrast to the average global minimum for 1981-2010. […]

  • Does Mars sometimes have rings?
    por Deborah Byrd el día 23 Marzo 2017 a las 10:00

    It's possible that Mars' closer moon - Phobos - might alternate between becoming a planetary ring and clumping together to form a moon. […]



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