NASA’s Chandra X-ray Observatory illuminates 800-year-old explosion

In the year 1181, observers witnessed a rare supernova explosion in the night sky. Records show that it was visible for 185 days. on NASA’s website, the space agency revealed an impressive composite image of the prime candidate in that search. The new image, made up of observations by Chandra and other observatories, sheds light on an incredibly rare type of supernova.

Scientists have since looked for the supernova’s remnant using modern instruments. For a while, scientists believed the supernova could have turned into the nebula surrounding a pulsar named 3C 58. However, closer observations revealed that the pulsar had been around before 1181. The composite image combined data across the electromagnetic spectrum. It presents an impressive new view of the supernova remnant, likely the same one seen in the night sky over 800 years ago.X-ray observations by the European Space Agency XMN-Newton space telescope show up in blue in the composite image. They help to show the full extent of the nebula. NASA’s The red and pink in the image come from infrared light observations collected by NASA’s Wide-field Infrared Space Explorer.

This occurs when two white dwarf stars merge. Typically, when that happens, no remnant is formed. However, incomplete explosions create a kind of “zombie” star, as in the case of Pa 30.

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