An interstellar comet is probably the most pristine object ever discovered
Image of comet 2I / Borisov obtained with the VLT telescope. Image credit: ESO New observations made with the participation of a scientist from BAS using the Very Large Telescope (VLT) of the European Southern Observatory (ESO) show that the unique comet 2I / Borisov, which is only the second newly discovered interstellar visitor to our solar system, is one of the most pristine objects that have ever been observed. Astronomers speculate that this comet never passed a star nearby, making it an intact remnant of the cloud of gas and dust from which it formed. Stefano Bagnulo and his colleagues, including Assoc. Prof. Dr. Galin Borisov from the Institute of Astronomy with NAO - BAS, used the FORS2 instrument of the VLT [...]