Admire the expansion of the remains of a supernova filmed by Hubble for 20 years
2023-09-29 19:40:16 Swan Lace. This is the poetic name that astronomers give to what remains of a supernova that appeared in our sky around 20,000 years ago. The diameter of this remnant nestled some 1,500 light years from Earth has now reached 120 light years and continues to expand. Herschel’s Swan Lace at Hubble Swan … Read more