3I/ATLAS is an interstellar comet originating from outside our solar system. It is scheduled to pass by Earth on October 29, 2025. Its origin and speed are completely different from those of ordinary comets, which is why astronomers consider it a special event.
2. Discovery in July 2025 Attracted Attention
The ATLAS Survey System in Hawaii discovered it in July 2025. From the outset, its orbit and speed piqued scientists’ interest. Its speed defies the norms of our solar system, suggesting its interstellar origin.
3. Will Pass at a Safe Distance from Earth
It will pass at a distance of approximately 1.8 AU (approximately 167 million miles) from Earth. This is a completely safe distance. Although the distance is significant, its passage is considered very significant from a scientific perspective.
4. A Rare Opportunity to Understand Planet Formation
Interstellar comets are extremely rare, and 3I/ATLAS presents a major opportunity for the scientific community. Researchers hope to gain new insights into planet formation and the early stages of other stellar systems by studying its chemical composition.
5. Hyperbolic Orbit Makes It a One-Time Visitor
3I/ATLAS’s orbit is hyperbolic. This means it is just passing through our solar system and will never return. This once-in-a-lifetime opportunity makes it even more special.
6. The Brightness Is Due to Its Unique Elements
Elements such as carbon dioxide, hydrogen cyanide, and nickel vapor have been found in this comet. These substances cause it to emit a faint green and blue light, which is considered a hallmark of interstellar comets.
7. Activity increased as it approached the Sun.
As 3I/ATLAS approached the Sun, the activity of its gas and dust increased. This behavior is common among comets, but its speed and intensity distinguish it from other comets.
8. Differing theories among scientists
There are differing opinions about its original identity. Some experts believe it is an ancient remnant of planets formed in another star system, while others suggest it was ejected from a distant stellar event. Nevertheless, most scientists consider it a natural interstellar object.
9. A telescope is needed to see it.
It will not be visible to the naked eye. A telescope of at least 8 inches (200 mm) is required to see it. Its faint brightness and remote location make it challenging yet exciting for both amateur and professional skywatchers.
10. Some important tips for skywatchers
Those who want to observe it should choose a dark night and avoid looking directly at the sun. Using the right filters is essential, especially when trying to view around the sun. Follow updates from NASA and other space agencies for the best information.
