Astronomers discovered 3I/ATLAS, a 10–20 km-wide interstellar comet racing into the solar system. It will reach perihelion in ...

October 14-31 – Comet C/2023 A3 (Tsuchinshan-ATLAS) becomes visible low in the west following sunset. If the comet's tail is well-illuminated by sunlight, it could be visible to the unaided eye.

Comet Tsuchinshan-Atlas, also known as C/2023 A3, is making its way towards Earth and is expected to be visible to the naked eye on Wednesday, Oct. 9 and Thursday, Oct. 10.

It’s officially the third known interstellar object to pass through our solar system and poses no threat to Earth.

October 14-31 – Comet C/2023 A3 (Tsuchinshan-ATLAS) becomes visible low in the west following sunset. If the comet's tail is well-illuminated by sunlight, it could be visible to the unaided eye.

Here's how to see 'Comet C/2023 A3' during the month of October.

Back in October 1965, another Kreutz sungrazer, Comet Ikeya-Seki, became so brilliant that at its peak it reportedly was 10 times brighter than the full moon and was visible even in the daytime, ...

October 14-31: Comet C/2023 A3 (Tsuchinshan-ATLAS) becomes visible low in the west following sunset. If the comet's tail is well-illuminated by sunlight, it could be visible to the unaided eye.

On October 26th, Comet C/2024 S1 will enter the field of view of SOHO's coronagraphs. This is what Comet C/2023 A3 looked like when it did the same a few weeks ago.

October's supermoon is the closest of the year and it's teaming up with a comet for a rare stargazing two-for-one. The moon will be 222,055 miles away Wednesday night, making it seem even bigger ...

October 14-31 – Comet C/2023 A3 (Tsuchinshan-ATLAS) becomes visible low in the west following sunset. If the comet's tail is well-illuminated by sunlight, it could be visible to the unaided eye.