Astronomy News

MUSICAL” WAVES DETECTED IN EARTH’S MAGNETIC FIELD

Long Range Sensors Detect:

  1.  Musical Waves
  2. A twin for our sun
  3. Two free-range planets found roaming the Milky Way in solitude
  4. Massive impact crater beneath Greenland

     

    1  “MUSICAL” WAVES DETECTED IN EARTH’S MAGNETIC FIELD: This week in Norway, a space weather observatory detected sine waves of exceptional purity rippling through Earth’s polar magnetic field. The waves, which persisted for hours with nearly perfect pitch, have been linked to “tearing instabilities” and explosions in Earth’s magnetic tail–not to mention bright auroras in Arctic skies.  Visit today’s edition of Spaceweather.com to see the waves and to learn more about them.

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2  Astronomers find a ‘solar twin’

Image 1

NASA/SDO

Astronomers have found a star that was likely born in the same stellar nursery as our Sun — only the second solar sibling ever to be identified.  READ MORE

3  Two free-range planets found roaming the Milky Way in solitude

Solitaryrogueplanet
Rogue planets, like the one shown in this artist’s concept, drift through interstellar space alone, and are thought to be prevalent throughout the Milky Way. NASA/JPL-Caltech
Astronomers think they’ve just discovered two more rogue planets wandering the Milky Way alone. And according to the new study, which is set for publication in the journal Astronomy & Astrophysics, the planets are likely just the tip of the iceberg when it comes to free-floating worlds hiding in our galaxy.

If confirmed, the newfound rogue planets — which were discovered as part of the Optical Gravitational Lensing Experiment (OGLE) — will join an elite group of only about a dozen or so starless worlds discovered so far.  READ MORE

4  Massive impact crater beneath Greenland could explain Ice Age climate swing

Image 5

Kjæer et al./Science Advances

The serendipitous discovery may just be the best evidence yet of a meteorite causing the mysterious, 1,000-year period known as Younger Dryas. READ MORE