[{"n": "Supernova remnant", "u": "/e/supernova-remnants/supernova-remnant/", "s": "Expanding structures from stellar explosions, key sources of cosmic rays."}, {"n": "3C 392", "u": "/e/supernova-remnants/3c-392/", "s": "Mixed-morphology supernova remnant interacting with a molecular cloud."}, {"n": "Antlia supernova remnant", "u": "/e/supernova-remnants/antlia-supernova-remnant/", "s": "A large, nearby supernova remnant spanning multiple constellations."}, {"n": "Cassiopeia A", "u": "/e/supernova-remnants/cassiopeia-a/", "s": "Brightest extrasolar radio source below 1 GHz, discovered in 1948."}, {"n": "Central compact object", "u": "/e/supernova-remnants/central-compact-object/", "s": "Neutron stars at supernova remnant centers, mostly radio-quiet and X-ray bright."}, {"n": "CTB 1", "u": "/e/supernova-remnants/ctb-1/", "s": "A mixed-morphology supernova remnant in Cassiopeia with an asymmetric oxygen-rich ejecta."}, {"n": "Cygnus Loop", "u": "/e/supernova-remnants/cygnus-loop/", "s": "A large supernova remnant spanning nearly three degrees across Cygnus."}, {"n": "E0102-72.3", "u": "/e/supernova-remnants/e0102-72-3/", "s": "Supernova remnant in the Small Magellanic Cloud with a neutron star."}, {"n": "G1.9+0.3", "u": "/e/supernova-remnants/g1-9-0-3/", "s": "The youngest-known supernova remnant in the Milky Way."}, {"n": "G12.82-0.02", "u": "/e/supernova-remnants/g12-82-0-02/", "s": "Second youngest supernova remnant in the Milky Way."}, {"n": "G54.1+0.3", "u": "/e/supernova-remnants/g54-1-0-3/", "s": "Young supernova remnant with a pulsar wind nebula in Sagitta."}, {"n": "G299.2-2.9", "u": "/e/supernova-remnants/g299-2-2-9/", "s": "One of the oldest observed Type Ia supernova remnants."}, {"n": "G306.3-0.9", "u": "/e/supernova-remnants/g306-3-0-9/", "s": "A young supernova remnant discovered by Swift in 2011."}, {"n": "G350.1-0.3", "u": "/e/supernova-remnants/g350-1-0-3/", "s": "A young, bright supernova remnant with a history of misclassification."}, {"n": "HESS J1731−347", "u": "/e/supernova-remnants/hess-j1731-347/", "s": "A young shell-type supernova remnant with a puzzling central compact object."}, {"n": "IC 443", "u": "/e/supernova-remnants/ic-443/", "s": "A galactic supernova remnant interacting with molecular clouds."}, {"n": "IRAS 00500+6713", "u": "/e/supernova-remnants/iras-00500-6713/", "s": "A rare supernova remnant from a white dwarf merger."}, {"n": "Kesteven 75", "u": "/e/supernova-remnants/kesteven-75/", "s": "Youngest plerion in the galaxy, with a flaring pulsar."}, {"n": "LMC N132D", "u": "/e/supernova-remnants/lmc-n132d/", "s": "Bright oxygen-rich supernova remnant in the Large Magellanic Cloud."}, {"n": "N103B", "u": "/e/supernova-remnants/n103b/", "s": "Supernova remnant in the Large Magellanic Cloud near NGC 1850."}, {"n": "Sagittarius A", "u": "/e/supernova-remnants/sagittarius-a/", "s": "A complex radio source at the Milky Way's center."}, {"n": "Simeis 147", "u": "/e/supernova-remnants/simeis-147/", "s": "A faint supernova remnant discovered in 1952 using a Schmidt camera."}, {"n": "SN 185", "u": "/e/supernova-remnants/sn-185/", "s": "First recorded supernova, observed in AD 185 by Chinese astronomers."}, {"n": "SN 386", "u": "/e/supernova-remnants/sn-386/", "s": "A guest star in Sagittarius, possibly a supernova or classical nova."}, {"n": "SN 393", "u": "/e/supernova-remnants/sn-393/", "s": "A probable supernova from 393 CE with a debated remnant."}, {"n": "SN 1006", "u": "/e/supernova-remnants/sn-1006/", "s": "The brightest stellar event in recorded history, observed worldwide in 1006."}, {"n": "SN 1572", "u": "/e/supernova-remnants/sn-1572/", "s": "A 1572 supernova that challenged ancient models of the heavens."}, {"n": "Kepler's Supernova", "u": "/e/supernova-remnants/kepler-s-supernova/", "s": "The last Milky Way supernova seen by the naked eye."}, {"n": "SN 1979C", "u": "/e/supernova-remnants/sn-1979c/", "s": "A core-collapse supernova in Messier 100, discovered by an amateur astronomer."}, {"n": "SN 1987A", "u": "/e/supernova-remnants/sn-1987a/", "s": "Closest supernova since 1604, first studied in modern detail."}, {"n": "SNR 0509−67.5", "u": "/e/supernova-remnants/snr-0509-67-5/", "s": "A supernova remnant in the LMC with a double-detonation origin."}, {"n": "Type Iax supernova", "u": "/e/supernova-remnants/type-iax-supernova/", "s": "A thermonuclear supernova that can leave a zombie star remnant."}, {"n": "W49B", "u": "/e/supernova-remnants/w49b/", "s": "A gamma-ray luminous supernova remnant possibly harboring a black hole."}, {"n": "Pulsar wind nebula", "u": "/e/supernova-remnants/pulsar-wind-nebula/", "s": "Nebula powered by a central pulsar's relativistic wind."}, {"n": "IGR J11014−6103", "u": "/e/supernova-remnants/igr-j11014-6103/", "s": "A neutron star with the Milky Way's longest relativistic jet."}, {"n": "PSR B1509−58", "u": "/e/supernova-remnants/psr-b1509-58/", "s": "A rapidly spinning neutron star creating a cosmic hand-shaped nebula."}, {"n": "Crab Pulsar", "u": "/e/supernova-remnants/crab-pulsar/", "s": "First pulsar linked to a supernova remnant; a bright gamma-ray source."}, {"n": "SN 1054", "u": "/e/supernova-remnants/sn-1054/", "s": "Supernova of 1054 whose remnant is the Crab Nebula."}]