时速21万公里，外星人要“打”过来了？

Group 1 - The article discusses the discovery of an interstellar object named 3I/ATLAS, which has sparked intense debate in the scientific community regarding its true nature [4][5][12] - Harvard professor Avi Loeb suggests that 3I/ATLAS may be an alien probe disguised as a comet, citing six anomalies that challenge traditional comet models [2][19] - Other scientists, including those from Sun Yat-sen University, argue that 3I/ATLAS is simply a comet, lacking any significant abnormalities [3][6][30] Group 2 - 3I/ATLAS was discovered on July 1, 2023, by the ATLAS telescope in Chile, and is the third confirmed interstellar visitor to the solar system, following 'Oumuamua and Borisov [11][12] - The object is estimated to have a diameter of 10 to 20 kilometers, with some estimates suggesting it could be as large as 40 kilometers, and it is currently located about 400 million kilometers from Earth [15][12] - Its trajectory is characterized by a high eccentricity of approximately 6.2, indicating a hyperbolic path that is distinct from typical solar system objects [13][14] Group 3 - Loeb's six anomalies include its large size and brightness, the absence of expected cometary gas features, an unusual orbital path, and the timing of its closest approach to the Sun [19][20][21][22][23] - The scientific community remains cautious, with researchers like Darryl Seligman asserting that 3I/ATLAS exhibits classic comet characteristics, including a "cometary activity" observed through telescopes [27][28][30] - The article emphasizes the importance of open-mindedness in scientific inquiry, with both Loeb and other scientists advocating for further observation and research into interstellar objects [32][33]