Thu Dec 18 06:00:00 UTC 2025: ## Summary:
An interstellar comet, 3I/Atlas, discovered in July 2025, is making its closest approach to Earth this week before heading back into interstellar space. NASA is tracking the comet, estimated to be between 1,444 feet and 3.5 miles in size, but it is fading. Amateur astronomers have the best chance to see it with their telescopes now. 3I/Atlas will pass near Jupiter in March before leaving the solar system for good in the mid-2030s. It’s the third interstellar object detected in our solar system. While scientists believe the comet originated in an older star system, Harvard scientist Ari Loeb suggests it could have alien origins. NASA has released several images of 3I/Atlas.
News Article:
Interstellar Comet 3I/Atlas Makes Closest Approach to Earth Before Leaving Solar System
NEW YORK – December 15, 2025 – A rare visitor from another star system is gracing our skies this week. Comet 3I/Atlas, an interstellar object discovered this past summer by NASA’s Atlas telescope, is making its closest approach to Earth before embarking on a one-way trip back to the vast expanse of interstellar space.
The comet will be approximately 167 million miles (269 million kilometers) from Earth on Friday, giving amateur astronomers a unique opportunity to observe it. NASA is also utilizing its space telescopes to study the icy interloper, which is estimated to be between 1,444 feet and 3.5 miles in size. However, as the comet moves away from the sun, it is becoming fainter, making it crucial to observe it now.
“This is a fantastic opportunity for stargazers to catch a glimpse of a cosmic traveler from a faraway star system,” said Paul Chodas, director of NASA’s Center for Near Earth Object Studies. “While it’s best viewed through a telescope, the experience of witnessing something so ancient and distant is truly remarkable.”
After its flyby of Earth, 3I/Atlas will swing past Jupiter in March before exiting our solar system entirely by the mid-2030s. This makes it the third interstellar object to be identified within our solar system. Scientists believe 3I/Atlas originated from a much older star system, making it a prime target for observation.
Not everyone agrees with the assessment that 3I/Atlas is solely an icy rock. Harvard scientist Ari Loeb, known for his research into possible extraterrestrial life, has suggested that the comet may be something else entirely. “We should put all possibilities on the table that it’s a rock, a comet, or something else until we get the evidence, the data that will tell us what it is,” Loeb said.
NASA has released several images of 3I/Atlas, showcasing its journey through our solar system. These images provide a visual reminder of the vastness of space and the constant movement of celestial bodies.
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