Following a massive cryovolcanic eruption, the mysterious Comet 29P/Schwassmann-Wachmann has been morphed into a giant spiral ...

Observations of interstellar object 3I/ATLAS show increased water, carbon dioxide, and organic gas release after its passage near the Sun, based on data from NASA’s SPHEREx mission ...

In the past few weeks, a new analysis of interstellar comet 3I/ATLAS has revealed the changes it experienced before and after ...

When a sky-survey telescope in Chile pointed out a small, moving point of light the first thought was business as ...

Comet 3I/ATLAS was full-on erupting into space in December 2025, after its close flyby of the sun, causing it to significantly brighten. Even water ice was quickly sublimating into gas in ...

SPHEREx detected a mix of molecules streaming off the comet, including water ice, carbon dioxide, and rocky material.

Comets usually fade quietly once they swing past the Sun. Interstellar comet 3I/ATLAS did not follow the same path. Instead, ...

NASA’s SPHEREx telescope spotted interstellar visitor comet 3I/ATLAS flaring up while exiting the solar system. Scientists explain what caused it.