3I/ATLAS: Largest Interstellar Comet Detected

Astronomers have confirmed the discovery of 3I/ATLAS, the third known interstellar object to visit our solar system, following 'Oumuamua and Borisov. Detected by the global ATLAS network in early July 2025, 3I/ATLAS is estimated to be between 20 and 40 kilometers wide, making it possibly the largest interstellar visitor observed. The comet is traveling at about 245,000 kilometers per hour and will remain over 150 million miles from Earth at its closest approach. Scientists expect it to be observable through September 2025, after which it will pass too close to the Sun for further observations. Its straight trajectory and high speed confirm its origin from the galactic disk beyond the Sun's gravitational influence. Researchers hope to glean insights into the chemistry and formation of other star systems from this rare object.