NASA Detects Mysterious Interstellar Object 3I/Atlas Entering Solar System; Poses No Threat to Earth

Astronomers have detected a mysterious interstellar object making its way through our solar system. The object, officially designated 3I/Atlas (C/2025 N1), was initially observed on July 2, 2025, by the ATLAS survey telescope in Chile. This marks only the third confirmed interstellar visitor, following ‘Oumuamua in 2017 and comet 2I/Borisov in 2019.

Currently, 3I/Atlas is traveling at an astounding 60 km/s, approximately 416 million miles from the sun. Its hyperbolic trajectory suggests it originated from beyond our solar system. NASA has confirmed that the object poses no threat to Earth.

NASA Confirms Third Known Interstellar Visitor

The interstellar object, initially named A11pl3Z, was first spotted by the Asteroid Terrestrial-impact Last Alert System (ATLAS) in Chile. Further observations by NASA and other observatories traced its path back to June 14, confirming its hyperbolic orbit and interstellar origins.

Now officially named 3I/Atlas, it joins a select group of confirmed cosmic wanderers. This discovery provides further evidence that such objects may be more prevalent in our galaxy than previously thought. The object is currently approaching the inner solar system from the direction of the constellation Sagittarius.

Comet or Asteroid? Ongoing Scientific Investigation

Though initially believed to be an asteroid, recent observations have revealed subtle comet-like activity.

The Minor Planet Center has noted a faint coma and a short tail, leading to its dual classification as C/2025 N1. Early brightness estimates suggested a size of around 20 kilometers in diameter. However, experts now believe that the dust cloud surrounding the object may be inflating its apparent size, and its solid core is likely smaller. 3I/Atlas is projected to reach its closest point to the sun around October 30, passing just within the orbit of Mars.

No Risk to Earth, Awaited Cosmic Spectacle

While its origins are extraordinary, NASA assures that 3I/Atlas will remain a safe distance from Earth, never approaching closer than 150 million miles. As it approaches the sun, the object may brighten, potentially becoming visible through amateur telescopes in late 2025 and early 2026.

The Virtual Telescope Project plans a live broadcast for enthusiasts eager to witness this rare celestial event. Scientists anticipate that studying this object will offer valuable insights into the composition and behavior of interstellar bodies.