NASA - The 'van Gogh' of the Infrared Sky
The Monkey Nebula, NGC2174 is a cloud of gas and dust that surrounds the star cluster NGC2175. The colors in this image may look like brush strokes of paint but actually represent specific wavelengths of infrared light. Particles of interstellar dust are warmed by the star cluster in the center of the nebula, which WISE (NASA's Wide-field Infrared Survey Explorer) represents by the colors green and red. The blue and cyan stars scattered throughout the image are hot compared to the dust.
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NASA 4) Butterfly Nebula (NGC 6302) Located in the constellation Scorpius, the structure of this nebula is one of the most fragile and complex that has ever been studied. The butterfly shape has lead scientists to name it's structure a "bipolar structure."
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The Heart Nebula, IC 1805, Sh2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes.
The Ant planetary nebula (Menzel 3 or Mz 3). STScI-PRC2001-05 This NASA/ESA Hubble Space Telescope image reveals the ant's body as a pair of fiery lobes protruding from a dying, Sun-like star. Though approaching the violence of an explosion, the ejection of gas from the dying star at the centre of Mz3 has intriguing symmetrical patterns unlike the chaotic patterns expected from an ordinary explosion.