{ "id": 30472, "url": "https://svs.gsfc.nasa.gov/30472/", "page_type": "Hyperwall Visual", "title": "Dwarf Galaxy Caught Ramming into a Large Spiral", "description": "Shown here, observations from NASA's Chandra X-ray telescope reveal a massive cloud of multimillion-degree gas in a galaxy about 60 million light years from Earth. The hot gas cloud is likely caused by a collision between a dwarf galaxy [bottom left] and a much larger galaxy called NGC 1232 [center]. The image, which combines X-rays and optical light, shows the scene of the collision. Chandra X-ray data, in purple, show the hot gas has a comet-like appearance, caused by the motion of the dwarf galaxy. Optical data from the European Southern Observatory's Very Large Telescope reveal the spiral galaxy in blue and white. The X-ray emission source at the top right of the image appears to be unrelated to the galaxy collision. If confirmed, this discovery would mark the first time such a collision has been detected only in X-rays, and could have implications for understanding how galaxies grow through similar collisions. The impact between the dwarf galaxy and the spiral galaxy caused a shock wave—akin to a sonic boom on Earth—that generated the hot gas with a temperature of about 6 million degrees.Used in 2014 Calendar. || ", "release_date": "2013-11-01T12:00:00-04:00", "update_date": "2024-10-10T00:21:05.841928-04:00", "main_image": { "id": 430022, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030400/a030472/dwarf_galaxy_caught_ramming_large_spiral_cal_print.jpg", "filename": "dwarf_galaxy_caught_ramming_large_spiral_cal_print.jpg", "media_type": "Image", "alt_text": "Chandra X-ray data shows a hot gas cloud caused by colliding galaxies.", "width": 1024, "height": 576, "pixels": 589824 }, "main_video": null, "main_credits": {}, "progress": "Complete", "media_groups": [ { "id": 342451, "url": "https://svs.gsfc.nasa.gov/30472/#media_group_342451", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "Shown here, observations from NASA's Chandra X-ray telescope reveal a massive cloud of multimillion-degree gas in a galaxy about 60 million light years from Earth. The hot gas cloud is likely caused by a collision between a dwarf galaxy [bottom left] and a much larger galaxy called NGC 1232 [center]. The image, which combines X-rays and optical light, shows the scene of the collision. Chandra X-ray data, in purple, show the hot gas has a comet-like appearance, caused by the motion of the dwarf galaxy. Optical data from the European Southern Observatory's Very Large Telescope reveal the spiral galaxy in blue and white. The X-ray emission source at the top right of the image appears to be unrelated to the galaxy collision. If confirmed, this discovery would mark the first time such a collision has been detected only in X-rays, and could have implications for understanding how galaxies grow through similar collisions. The impact between the dwarf galaxy and the spiral galaxy caused a shock wave—akin to a sonic boom on Earth—that generated the hot gas with a temperature of about 6 million degrees.

Used in 2014 Calendar.

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