I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system.

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as close to Earth as ever.

In fact, NASA on Thursday revealed its Europa Clipper mission-named for the space probe launched to orbit one of Jupiter's moons-caught a glimpse of 3I/ATLAS back on Nov. 6. At th

Sometimes "the universe comes to us," writes the European Space Agency. On Friday it came really close, when comet 3l/ATLAS passed by us at a ― relatively ― short distance. What exactly is this interstellar visitor?

Today is 3I/ATLAS day – it's the closest that bizarre cosmic visitor will ever get to us, so pack your eight-inch (telescope) and get off to your nearest viewing gallery for a gander

Comet 3I/ATLAS will approach within 168 million miles (270 million kilometers) of Earth when it makes its close flyby on Dec. 19. Good morning space fans! Interstellar comet 3I/ATLAS made its closest approach to Earth moments ago,

Discover the secrets of 3I/ATLAS, the 7.6 billion-year-old interstellar comet passing Earth. Learn about its ancient origins and unique chemical makeup.

Note: The peak viewing window for 3I/ATLAS over Hawaiʻi skies is between 4 and 5:45 a.m., Friday, Dec. 19, 2025. Optimal viewing is 90 minutes before sunrise in the eastern to southeastern sky in the constellation Leo,