India, Oct. 30 -- A mysterious comet, 3I/ATLAS, has reached its closest point near the Sun today, on October 29. Scientists are closely observing how it behaves. Many people believe it can reveal whether this interstellar visitor is a natural object or something more extraordinary.

The Comet's closest approach, known as perihelion, happened at 11:47 a.m. UT, (7:47 a.m. Eastern Time). According to Harvard professor Avi Loeb, this is a key moment, what he calls the comet's "acid test." He says that if 3I/ATLAS were a spacecraft, this would be the best time for it to change direction or speed.

So far, NASA and astronomers describe it as the third known object from outside our solar system to pass through our neighborhood, after the famous ...