NASA’s Chandra X-ray Observatory Releases Stunning Videos of Supernova Remnants
NASA’s Chandra X-ray Observatory has recently released two captivating videos showcasing two famous supernova remnants in the sky – the M1 Crab Nebula and Cassiopeia A (Cas A). The data, collected over the span of 20 years, show the dynamic changes in radiation produced by these remnants of massive stars in our Milky Way galaxy.
The Crab Nebula, located 6,500 light-years away from Earth, stems from a supernova explosion observed by Chinese astronomers in 1054 AD. At its core lies a neutron star, or pulsar, spinning about 30 times per second. The pulsar’s high-velocity jets emit X-ray particles, creating mesmerizing fluctuations in the rings and jets observed by Chandra over the past 22 years. The observatory will continue tracking these changes in the Crab Nebula’s jets through further observations this year.
On the other hand, Cassiopeia A (Cas A) is estimated to have exploded about 340 years ago, showcasing a spreading shock wave in its outer region. Chandra’s observations have led to exciting discoveries, including evidence of a “superfluid” inside the Cas A neutron star and insights into the distribution of elements formed inside stars. Recent data from Chandra, combined with the James Webb Space Telescope, will help unravel the mysterious structures inside Cas A’s wreckage.
These videos provide a glimpse into the breathtaking beauty and complexity of supernova remnants, offering valuable insights for astronomers and space enthusiasts alike. The release of these videos marks another milestone in our understanding of the cosmic phenomena surrounding us.
(This article is reprinted with permission from the Taipei Planetarium; the first picture is a schematic diagram, source: pixabay)