This time-lapse of Hubble images taken between 1994 and 2016 shows the shockwave from Supernova 1987a slamming into and superheating a ring of material ejected 20,000 years earlier.
Credits: NASA, ESA, R. Kirshner (HSCfA, Gordon and Betty Moore Fnd), P. Challis (HSCfA)
Chirp! is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.
All Chirp! content and data are available under the Creative Commons Attribution 3.0 license.