It has been quite a decade for NASA and astronomy in general.  Many of the most exciting finds have been from The Hubble Space Telescope.  In these pics they followed something very unusual:

Variable star RS Puppis was observed by the Space Telescope over a period of 5 weeks. These types of stars are unstable because they have consumed most of the hydrogen fuel. The pulsations seen are not moving gas, but light echoes.

Let’s check out this incredible pulsating formation in the video on page 2

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