A significant cosmic event is unfolding as the interstellar comet 3I/ATLAS travels through our solar system, stirring speculation about potential alien origins. Detected in 2025, this massive comet, with an estimated nucleus diameter of several kilometres, surpasses previous interstellar visitors like Oumuamua and Borisov. Images and size estimates provided by NASA and the Hubble Space Telescope have captured the attention of astronomers worldwide.
3I/ATLAS was first observed hurtling through space at an astonishing speed of 210,000 kilometres per hour. It is now recognized as the third confirmed interstellar object to enter our solar system. The comet’s closest point to the Sun, known as its perihelion, took place on October 29, 2025, at approximately 1.4 astronomical units or 210 million kilometres. Just prior to this, it passed Mars on October 3, 2025, at a distance of 0.194 astronomical units, providing opportunities for missions like HiRISE to conduct detailed observations.
3I/ATLAS is expected to reach its closest approach to Earth on December 19, 2025, at a safe distance of 1.8 astronomical units or 270 million kilometres. NASA has confirmed that there is no risk of collision. This trajectory allows for unprecedented study of the comet’s composition, with initial images revealing a striking blue hue that has intrigued scientists.
Using Hubble’s advanced imaging capabilities, astronomers have estimated the nucleus size of 3I/ATLAS to be as large as 15 kilometres in diameter, significantly larger than what is typical for comets. Further analysis suggests its mass exceeds 33 billion tons, categorizing it as “anomalously massive” and challenging existing models of comet formation. In a recent post on X, astrophysicist Avi Loeb noted unusual nickel emissions detected from the comet, suggesting they defy conventional physics and may point to an artificial origin. Nevertheless, NASA maintains that 3I/ATLAS is a natural comet, with no radio signals detected despite thorough searches.
As the comet continues its journey, sensational claims have emerged online regarding a supposed “massive structure” that is allegedly 100 times larger than 3I/ATLAS, purportedly targeting the comet. These narratives have circulated on social media and video platforms, often linked to unverified anomalies near the Sun. Such assertions, including a statement from Dr. Emily Carter asserting that this discovery “challenges our previous notions of what we thought we knew about interstellar objects,” lack validation from credible sources.
Experts from outlets like Live Science have dismissed any links to alien technology, asserting that 3I/ATLAS resembles typical comets such as C/2025 V1. An X post from ORF highlighted that early detection of 3I/ATLAS enables scientists to study the comet closely without the need for interception. This balanced perspective underscores the importance of evidence over sensationalism in cosmic research.
The purported new anomaly, described in various online videos, is depicted as a colossal disc-shaped structure captured in alleged footage from NASA’s SOHO observatory on March 27, 2023. This object is said to exhibit perfect geometric symmetry and sharp edges that appear engineered, raising questions about its nature. Speculative theories suggest it could be an interstellar energy-harvesting platform or a surveillance hub, although experts firmly categorize these ideas as entertaining fiction lacking empirical evidence.
As research on 3I/ATLAS continues, the scientific community remains focused on understanding the true nature of this remarkable comet and its implications for our knowledge of the universe. The excitement surrounding 3I/ATLAS emphasizes the need for rigorous scientific inquiry in the face of captivating yet unverified claims.
