A viral telescope image claims to show unusual structure in 3I/ATLAS on its Mars flyby day. We analyzed the evidence and the reality is far less mysterious than social media suggests.
Discover the true size of 3I/ATLAS: at least 5 kilometers across and 10 times larger than previous interstellar visitors. Learn how scientists measured this mysterious object from another star system.
When comet SWAN C/2025 R2 was discovered in September 2025, astronomers wondered: could this be a scout released by the mysterious 3I/ATLAS? The answer reveals something even more intriguing about our cosmic neighborhood.
New images reveal 3I/ATLAS glowing green despite lacking the molecules that typically cause this phenomenon in comets. This latest mystery adds another puzzle to our enigmatic interstellar visitor.
New observations reveal 3I/ATLAS is accelerating through space using forces beyond gravity alone. This non-gravitational acceleration provides the first direct evidence of how our mysterious interstellar visitor propels itself through the cosmos.
The mysterious interstellar visitor has suddenly shifted from red to green, defying all expectations and revealing chemical signatures that challenge everything we thought we knew about space objects.
New polarimetric observations reveal that our mysterious interstellar visitor exhibits light-scattering properties never seen before in any asteroid or comet, deepening the mystery of its true nature.
Latest observations from the Gemini South telescope reveal our mysterious interstellar visitor is becoming dramatically more active, sporting a magnificent growing tail as it journeys deeper into our solar system.
On October 3rd, 2025, our mysterious interstellar visitor will pass within 29 million km of Mars. This historic encounter could reveal whether 3I/ATLAS is harboring technological secrets.
The unusual nickel-without-iron emission from 3I/ATLAS breaks every rule of natural space chemistry. While some propose artificial origins, instrument limitations complicate conclusions.
Two space telescopes reveal 3I/ATLAS has a massive 348,000 km gas cloud and alien chemistry unlike anything in our Solar System. What exactly are we looking at?
Marian Rudnyk explains why 3I/ATLAS unusual brightness and behavior can be explained by cryo-volcanic activity, comparing it to known comets like 29P/Schwassmann-Wachmann 1 and Halley.
Exploring the fascinating astronomical coincidences connecting a mysterious 1977 radio signal, our newest interstellar visitor, and humanitys most distant spacecraft
Harvard astrophysicist Avi Loeb outlines a comprehensive framework for humanity to respond if we confirm that 3I/ATLAS or future interstellar visitors are artificial technology
Plasma Physicist Dr. John Brandenburg shares why he believes interstellar object 3I/ATLAS is not a comet, comparing it to Oumuamua and 2I/Borisov in light of unusual outgassing activity far from the Sun.
