A Harvard University professor has said that 3I/ATLAS experienced a sudden "nongravitational" acceleration while passing around the sun.

As 3I/Atlas neared its closest point to the sun in its orbit, the internet was abuzz with curiosity about the comet.

An interstellar visitor is puzzling scientists with its strange colour and rapid brightening, prompting fresh questions about what’s really happening as it travels through our Solar System.

Here's where Comet 3I/ATLAS, Lemmon and SWAN are in the Halloween sky.

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Harvard astrophysicist Avi Loeb is fiercely demanding that NASA release high-resolution images of the interstellar object 3I/ATLAS.

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 hyperbolic trajectory,