At https://phys.org/news/2020-05-sky-comet-swan.html … the image below was taken by a UK astrophotograper, Damian Peach …
… unfortunately, it won't be easy to see the comet by naked eye observation. Binoculars or telescopes are recommended. This is because of the bright twilight sky and the low altitude of the comet. There is a short video at the link above, a guide to seeing the comet from the UK and northern latitudes in general.
At https://physicsworld.com/a/if-planet-nine-is-a-primordial-black-hole-cou… … if Planet Nine is a primordial black hole could we detect it with a fleet of tiny spacecraft. This is an interesting idea. If Planet Nine can't be detected and then that might be as a result of it not being a planet – but a black hole.
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At https://phys.org/news/2020-05-groupie-galaxies-orbiting-milky-dark.html …. groupie galaxies – a projection of groupies chasing pop groups. In this analogy they are referring to smaller galaxies that seem to be associated with the Milky Way, some of which can barely be seen. Is dark matter involved? The latter is the perennial mystery. Can't be seen but it makes models work. Well, they seem to have taken it all a stage further. It is thought there should be another hundred smaller galaxies that await discovery. They are hiding is the claim.