Recently, our Solar system was visited by a comet, originally from another part of the galaxy. In late August, the Amateur astronomer Gennady Borisov noticed the object moving across the sky. Subsequent observations showed that the velocity and trajectory of the object indicate its origin outside the Solar system. Currently, the comet Borisov is the second guest after interstellar comets “Omului”. A study published in the journal Nature Astronomy has revealed details such as the size of the kernel and the distribution of gas, however, further observation will allow scientists to understand the structure of matter and chemical composition in other stellar systems.
The envoys of other worlds
The first interstellar visitor to the Solar system that arrived in 2017, called the Hawaiian name “Omwamwi”, meaning “messenger from afar who have arrived first.” Appearance “Omwamwi” failed to meet expectations the first ever interstellar the guest, unlike the comet Borisov, which is virtually indistinguishable from local objects. Familiar properties of this comet indicate that beyond our cosmic home around other stars are also formed of the comet.
And yet, the arrival of “Omwamwi” forced astronomers to reconsider the frequency with which other objects need to visit the Solar system. Even with the updated data, the astronomers did not expect the next visitor to 2022. It for 2022 is scheduled to launch a Large telescope for SYNOPTIC surveys (Large Synoptic Survey Telescope) is a wide — angle observation telescope is a reflector, that will be scanning the sky every three nights. Of course, no one expected the second visitor just two years later after the first one. What do you think, what other objects from other worlds can enter our Solar system? Let’s discuss it with members of our Telegram chat.
Comet Borisov is all “Omwamwi” is not. While the first interstellar visitor is more like an asteroid, comet Borisov vague tail, typical for such objects. Because the comet is active and approaches the Sun and to the Earth, it becomes brighter. Most importantly, while “Omwamwi” it was possible to study only a few weeks before it was barely visible even for the Hubble space telescope. But the comet Borisov will be visible to astronomers for several months. Based on the data received, today, astronomers know that comet Borisov has a radius of about 1 kilometer, which is similar to the sizes of comets in the Solar system. In the core dominated by dust with traces of gas. The only thing the astronomers believe the comet Borisov is distinguished from the local comet is its trajectory.
Future observations of the comet Borisov
Astronomers around the world will continue monitoring the interstellar visitor while the comet can be seen. As soon as 8 December, the comet Borisov as close to the Sun, and on December 28 to the Ground, both professionals and Amateur astronomers will be ready. Scientists also hope to obtain data on the composition of the comet.