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What is the reason for Hercules A to emit huge fountains of Plasma?

black-hole supermassive-black-hole

modified Jan 21 at 0:16 Moggsy8 1

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How can a black hole have a charge, or be charged?

black-hole astrophysics cosmology supermassive-black-hole theories

modified Jan 18 at 6:56 Jan Gogolin 109

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Why black holes have positive energy?

black-hole gravity

answered Jan 14 at 19:11 Ronald De Rubeis 1

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Could anything consume a small black hole?

star black-hole mass neutron-star

modified Jan 12 at 8:57 Allure 2,978

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What is the relation between size (radius) of an astronomical object and the speed of oscillation of 'light' coming from it? (Strength/amplitude)?

observational-astronomy black-hole supernova neutron-star theories

modified Jan 3 at 5:44 Justin Tackett 1,682

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Would a planet orbiting black hole be detectable?

black-hole exoplanet

modified Dec 27 '21 at 10:03 Rob 1,121

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Can a small black hole orbit a large star?

star black-hole gravity stellar-astrophysics

modified Dec 20 '21 at 14:03 fasterthanlight 5,384

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Is a black hole found in the centre of the low-surface-brightness and dark-matter-free galaxy AGC 114905

observational-astronomy black-hole galaxy dark-matter gravitational-lensing

modified Dec 9 '21 at 20:01 Alex 571

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Have any HCSSs (supermassive black holes with a tight bunch of gravitationally bound stars) ever been detected?

black-hole supermassive-black-hole

modified Dec 5 '21 at 20:46 user438383 228

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How, precisely, do radio astronomers detect (and record) the phases of waves for interferometry?

observational-astronomy black-hole radio-astronomy radio-telescope event-horizon-telescope

modified Dec 2 '21 at 14:54 Kurt Hikes 3,081

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Can we compress any object to create black Holes?

star black-hole nucleosynthesis

modified Dec 1 '21 at 22:35 Kerry Williams 1

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How did the Universe climb out of its own Big Bang black hole?

black-hole cosmology big-bang-theory

modified Dec 1 '21 at 17:52 Woody 675

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The question regarding ZTF20acigmel space event detection

black-hole

modified Nov 28 '21 at 15:36 ProfRob 107k

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Is there an official list of objects in the sky?

black-hole gravitational-waves quasars

modified Nov 26 '21 at 0:05 James K 81.9k

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