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    • Denis
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  • Denis
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Earth as seen from the Sun during the solstices

A side-by-side comparison of the Earth as seen from the Sun during the June 21 and December 21 solstices helps us understand the large seasonal cycle of temperature and length of day/night at high latitudes. In a blog post, I provide separate animations for the June and December solstices, and some nice graphics and text explaining this astronomical phenomenon.

Physics Blog

Astrophysics websites

NASA links

  • Cassini mission to Saturn
  • Juno mission to Jupiter
  • SOHO (SOlar and Heliospheric Observatory)

Other space agencies

  • Canadian Space Agency
  • European Space Agency


Recent news in astrophysics

  • Interstellar meteorite visits the inner solar system

Cool videos

Why a total solar eclipse is such a big deal.


Kilonova explosion: two neutron stars merge and create heavy atoms of gold and platinum.

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