Gennady Borisov stunned the astronomical community earlier this year when he announced that he had spotted an interstellar comet dashing through our solar system.
How to Find an Insterstellar Comet: A Q&A with Discoverer Gennady Borisov : Read more
FYI. For those who stargaze and use Starry Night software (space.com does use for some of their sky charts), the comet ephemeris is loaded, tracking 2I/Borisov with simulation views. At my location, the comet rises shortly after 0126 EST tomorrow morning. Sky charts available using Starry Night. I may try and view using my 10-inch Newtonian but limiting magnitude stars in my area about mv+5.5/5.6 (a good dark sky site about +6.0/6.5). This comet is still very faint for 10-inch telescopes.