PR-2-26

Today's science topic takes you to see astronomers discovering a new interstellar visitor An object from outside the solar system It is an interstellar object the 1-meter telescope at Lu Lin Observatory detected a moving point of light on July 2nd Based on its brightness this interstellar comet may have a diameter of more than 10 kilometers Also astronomers from Harvard University have pointed out This is likely not an interstellar comet but an alien spacecraft because as a comet from outside the solar system It is a bit too large It has attracted the attention of the global astronomy community Observed on July 2nd The interstellar comet observed by the 1-meter telescope at the Lulin Observatory we saw this very bright moving point of light It is an interstellar comet The one captured by the researcher is an extremely rare interstellar comet It has been officially named 3i Atlas It is the third confirmed interstellar object in the solar system Interstellar objects are actually celestial bodies that originate from outside our solar system Because we know that All celestial bodies formed within the solar system orbit the sun but interstellar objects are those that come from one A distant place far from the sun this time the interstellar comet discovery was made by the Atlas sky survey telescope in Chile The moving white spot captured on July 1st is the 3i Atlas When you see it It has already entered our solar system meaning it is now at a relatively close distance to us which is why were able to detect it Because these interstellar objects are basically very dark move very quickly and we are not sure where they are exactly so they are often accidentally discovered So when we saw it it was already quite close to us It was first discovered as a moving celestial body then further discovered that Its orbit is a bit different Its orbital speed is very fast It came from outside the solar system Further observations It was discovered to be a comet Currently based on its brightness this interstellar comet may have a diameter of over 10 kilometers Where did it come from We don't know yet We don't know who its parent star is It's just that what we can now confirm is that it came from the direction of Sagittarius so we don't know What is its parent star Let's look at the subsequent observations whether there is a way to deduce its orbit Then let's see Do you know which one it is What everyone is most concerned about is whether its orbit poses a threat to Earth This grayish line It is an interstellar comet from outside the solar system The orbit of 3i Atlas It is very different from the orbits of the planets in the solar system it enters the solar system with a nearly straight orbit Because of a slight gravitational pull it entered the orbit and experienced some changes Then it shot out and left the solar system It will not overlap with Earth's orbit meaning it will have no effect on us It is estimated to occur around October 30th The closest point to the sun when in Mars' orbit Eccentricity is 0 Which means it is a circular orbit The greater the eccentricity The more elliptical its orbit is for an interstellar comet or interstellar small body Its orbital eccentricity is greater than 1 Greater than 1 means it is not a closed orbit It's a track that rushes in and rushes out Although 3i Atlas poses no threat to us But capturing the discovery of an exoplanet is relatively difficult Therefore the proximity of an interstellar object is discovered It allows astronomers to better understand celestial bodies outside our solar system The exoplanet has arrived meaning it is actually a distant package Then it flew into our solar system So we could observe it up close After we observed it We could better understand it These exoplanets orbit other stars Their initial composition Some chemical properties Is it also similar to our solar system So it would be more helpful for us to understand some theories about the formation of planets in our solar system Next as this sudden interstellar visitor gets closer we will have more opportunities to grasp and analyze more information about it Let us gain a bit more understanding of this vast universe