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Light Echoes

The Sun. The centre (or rather, the elliptic focus) around which our planet travels. Our biggest source for electromagnetic energy. It's the sustenance of almost every form of life on the planet. It's the conductor of Earth's climate and meteorology...

Afbeelding_van_de_zon.jpg However, perhaps the Spanish expression 'Astro Rey' ('King of the Stars') might be a little too much for it. In spite of it being brighter than 85% of the existing stars in the Milky Way, the Sun is still just a 'simple' medium G2 spectral type star in the immensity of the Universe... or -no need to go that far- our galaxy.

hs-2003-10-i-full_jpg-640x640.jpg According to one of the latest posts on Aula Geek, some time around January 2002, the V838 Monocerotis star became 600 thousand times brighter than our 'humble' neighbour. This phenomenon is known as a light echo. A truly spectacular sight. :P 

800px-V838_Monocerotis_expansion.jpg
 

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