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Polar Wandering "EMPOWER IAS"

Context:

  •  Global warming and melting glaciers have redefined the ‘polar wander’ or the drifting of the Earth’s axis, finds a study published in Geophysical Research Letters.
  • Astrophysicists using the Gemini telescope have spotted the first ‘blow-away’ galaxy.

 

https://lh3.googleusercontent.com/v7gRG8GX7Eu2XTAayaMeqJ58ALiW3AlCA8kgJnSfLsKgmXKbXfW5kmehySnDMKigtFVkkyP5Gu2J3ozGQRBUVpbJUs0K18oOZBlQPk3H_fdU-2v70FMhC2sMVULLEXbwXmOJKP7G

 

 

Blown away galaxy

  • Recently blown away galaxy has been spotted using the Gemini telescope
  • The Gemini Observatory is an astronomical observatory consisting of two 8.1-metre telescopes, Gemini North and Gemini South, which are located at two separate sites in Hawaii and Chile, respectively. 
  • The twin Gemini telescopes provide almost complete coverage of both the northern and southern skies.
  • It has been reported that Hydrogen clouds have been stripped off exposing high-energy light.

 

Polar Wandering

  • The study of polar wandering began in the early 20th century.
  • Polar wandering, the migration of the magnetic poles over Earth’s surface through geologic time.
  • Austrian priest and geologist Damian Kreichgauer and German scientists Wladimir Köppen and Alfred Wegener, proposed the first paths of geomagnetic North Pole migration. 
  • On the time scale of polar wandering, geomagnetic reversals (polarity reversals of the geomagnetic field) are relatively frequent.
  • That polar-wandering curves for different continents (which show the paths of a magnetic pole with respect to a given continent) do not agree was one of the first important evidences for continental drift (the large-scale movements of continents and ocean basins relative to one another over geologic time). 

 

https://lh3.googleusercontent.com/v7gRG8GX7Eu2XTAayaMeqJ58ALiW3AlCA8kgJnSfLsKgmXKbXfW5kmehySnDMKigtFVkkyP5Gu2J3ozGQRBUVpbJUs0K18oOZBlQPk3H_fdU-2v70FMhC2sMVULLEXbwXmOJKP7G

 

 

Blown away galaxy

  • Recently blown away galaxy has been spotted using the Gemini telescope
  • The Gemini Observatory is an astronomical observatory consisting of two 8.1-metre telescopes, Gemini North and Gemini South, which are located at two separate sites in Hawaii and Chile, respectively. 
  • The twin Gemini telescopes provide almost complete coverage of both the northern and southern skies.
  • It has been reported that Hydrogen clouds have been stripped off exposing high-energy light.