Cone Nebula Copy.jpg (11362 bytes) Cone Nebula, 2500 light-years from Earth as seen by the Hubble Telescope. This enormous pillar of gas and dust is about 2.5 light-years high. The origin of these pillars is still debated, but their size compared to volcanic explosion columns is enormous. (This does not imply that they may or may not have  formed by some gigantic cosmic explosion.) Photo by Hubble Space Telescope.

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