A century after Einstein’s prediction of gravitational waves, LIGO has observed these minuscule ripples in the fabric of spacetime. A new window to the Universe has opened.
This is less a physical question than a moral one. Should we feed a black hole? If we do, will it ever learn to feed and fend for itself independently? Will it ever truly be able to return to the wild, or will it ever after be chained to the yoke of domestic comfort?
More than 100 massive stars orbit the supermassive black hole at the center of our galaxy incredibly closely.
Today’s astrobite is not about disc jockey insects informing us about spacetime. Read on to find out a novel way of detecting electromagnetic counterparts of merging supermassive black holes.
Dark matter, in the form of primordial black holes, can potentially trigger Type Ia supernovae in white dwarfs.
Cosmic reionization is a period in the Universe history when it switched from being predominantly neutral to mostly ionized. We still haven’t quite pinned down the source(s) that caused this transition, but we have our suspicions. It could be quasars. It could be galaxies. Or could it be something else?
[Figure from universe-review.ca/F05-galaxy06.htm]