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accretion-discs × 61black-hole × 25
supermassive-black-hole × 11
accretion × 8
quasars × 7
solar-system × 5
observational-astronomy × 4
gravity × 4
neutron-star × 4
planetary-formation × 4
sagittarius-a × 4
the-sun × 3
astrophysics × 3
general-relativity × 3
star × 2
space-time × 2
gravitational-waves × 2
star-formation × 2
pulsar × 2
galaxy-center × 2
x-ray × 2
event-horizon-telescope × 2
astronomical-jet × 2
synchrotron-radiation × 2
the-moon × 1