The outer edge of the Oort Cloud is estimated to be 0.5 parsecs (1.6 light-years) from our Sun, which makes them particularly responsive to perturbations from a number of sources. These comets are generally the result of objects making close flybys with the Solar System and knocking objects loose, to the point that they periodically fly through the Solar System and around the Sun before heading back out. Beyond this, at a distance of roughly 1.63 light-years from the Sun (0.5 parsecs), is a massive cloud of icy debris known as the Oort Cloud, which is where long-period comets originate. dwarf) planets orbiting our main sequence G-type yellow dwarf Sun, which is surrounded by an outer ring of icy objects known as the Kuiper Belt. To start things off simple: our Solar System is composed of eight designated planets and several minor (aka. Credit: ESA/ATG medialab background: ESO/S. As they indicated, they relied on astrometric data from the Gaia missionвЂ™s Early Data Release 3 (EDR3), which revealed kinematic characteristics of stars that are expected to pass within 3.26 light-years (1 Parsec) with the Solar System in the future. Bajkova, two researchers from the Pulkovo ObservatoryвЂ™s Laboratory of Galaxy Dynamics in St. Using data collected by the Gaia Observatory, two researchers with the Russian Academy of Sciences (RAS) determined that a handful of stars will be making close passes by our Solar System in the future, one of which will stray pretty close! Knowing when stars will make a close encounter with our Solar System, and how it might shake-up objects within it, is therefore a concern to astronomers. At times, this can have a drastic effect on the star that experience a close encounter, disrupting their systems and causing planets to be ejected. As they orbit, stars in the galactic disk (where our Sun is located) periodically shuffle about and get closer to one another. Within the Milky Way, there are an estimated 200 to 400 billion stars, all of which orbit around the center of our galaxy in a coordinated cosmic dance.

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