Its long, blue tail — the product of ionized gas that's been vaporized off of the comet's surface and blown away by the solar ...

Astronomers are stunned as interstellar comet 3I/ATLAS erupts early from behind the Sun, releasing a 10,000 km gas jet and ...

Comet C/2025 A6 (Lemmon) will pass through the neck of the great celestial serpent represented by the constellation Serpens ...

A peculiar interstellar visitor, 3I/ATLAS, is challenging comet theories with its sunward tail and unusual composition. While ...

Skywatchers can catch a rare glimpse of Comet Lemmon this month, and it won't be back until around the year 3175. Here's how ...

A NASA-backed planetary defense group has reportedly begun efforts to pinpoint comet 3I/ATLAS after it was observed emitting ...

The comet, called 3I/ATLAS, is the third known interstellar object that has come through our solar system. As it flies deeper ...

Learn when and where to see Comet Lemmon and Comet SWAN this October as they light up the night sky in a rare double comet ...

NASA has activated a global planetary defense group to study a massive interstellar object exhibiting strange, possibly artificial characteristics ...

Comet 3I/ATLAS is the third known interstellar object to cross the Solar System, and in a matter of days it will pass the ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

A research team led by the Shanghai Astronomical Observatory of the Chinese Academy of Sciences has used the Tianma Radio Telescope to conduct multi-band radio observations of the returning comet ...