A rogue visitor from deep space, Comet 3I/ATLAS, has put NASA on alert after its trajectory and behaviour shifted ...

Astronomers have identified Comet 3I/ATLAS as an interstellar object, making it only the third confirmed visitor from outside our solar system, according to NASA.<br /><br />The comet is travelling on ...

A NASA logo is displayed at the entrance to the Mary W. Jackson NASA Headquarters building on June 2, 2025 in Washington, DC. (Photo by Kevin Carter/Getty Images) NASA is inviting the public to join ...

The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How different will it look when it reappears on the other side?