Comet 3I/ATLAS, only the third interstellar object ever observed, is making its final pass through our skies, offering a rare ...

What: Ultraviolet observations of the interstellar comet 3I/ATLAS captured by NASA’s Europa Clipper spacecraft while the ...

Astronomers spotted comet C/2025 R3, potentially visible without telescopes. It will approach Earth and Sun in April 2026, ...

The European Space Agency (ESA) has made an unusual observation of comet 3I/ATLAS in a “test case” for future planetary defense efforts. Using data collected from a Mars-orbiting satellite, ...

Interstellar comet 3I/ATLAS makes its closest approach to Earth on Dec. 19. Here's how you can track its progress both during the pass and as it races out of the solar system on its way to ...

A deep image of interstellar Comet 3I/ATLAS captured by the Gemini Multi-Object Spectrograph (GMOS) on Gemini South at Cerro Pachón in Chile, one half of the International Gemini Observatory and ...

Hubble captured this image of the interstellar comet 3I/ATLAS on July 21, 2025, when the comet was 277 million miles from Earth. Hubble shows that the comet has a teardrop-shaped cocoon of dust coming ...

A spacecraft en route to Jupiter has captured unprecedented ultraviolet images of the interstellar comet 3I/ATLAS, providing ...

In the fall of 2023, Unistellar observers joined forces with the Association Française d’Astronomie (AFA) to take another close look at a familiar visitor: Comet 103P/Hartley 2. This tiny but famously ...