IMAGE: This image was taken with the FORS2 instrument on ESO’s Very Large Telescope in late 2019, when comet 2I/Borisov passed near the Sun. Since the comet was travelling at breakneck speed, around 175 000 kilometres per hour, the background stars appeared as streaks of light as the telescope followed the comet’s trajectory. The colours in these streaks give the image some disco flair and are the result of combining observations in different wavelength bands, highlighted by the various colours in this composite image. CREDIT: ESO/O. Hainaut
We now turn our attention to space objects with an update on the interstellar comet 2I/Borisov. Back in the before times, in fall 2019, amateur astronomer Gennady Borisov discovered a comet passing through our solar system on a trajectory that indicated it is a visitor from some other star system. Since then, astronomers have used every possible telescope to observe Borisov in as much detail as possible.
According to Ludmilla Kolokolova: The arrival of 2I/Borisov from interstellar space represented the first opportunity to study the composition of a comet from another planetary system and check if the material that comes from this comet is somehow different from our native variety.
One of ...