The comet's coma, a cloud of gas and dust, is composed of carbon dioxide, water vapour, carbon monoxide, and carbonyl sulfide. Notably, it emits atomic nickel vapour and cyanide gas, a first for interstellar comets.

5 reasons why 3I/ATLAS differs from the first interstellar comet 2I/Borisov

NASA has yet to reveal any information on the interstellar object 3I/Atlas that its Mars orbiter might have captured. People think there is something fishy about its silence. However, a scientist says it is simply "terrestrial stupidity' thanks to the US government shutdown.

NASA's silence on 3I/Atlas down to 'terrestrial stupidity', not proof of 'alien intelligence' - Blame govt shutdown

The first photo of 3I/Atlas taken by a Mars orbiter has been released. It was taken by ExoMars Trace Gas Orbiter (TGO) and shows a bright, white object tumbling through space 30 million km from Mars. ESA is still working to get more photos from its other orbiter.

3I/Atlas photo taken by Mars orbiter: ExoMars (TGO) captures bright coma but no tail

3I/Atlas trajectory has been flagged as anomalous. Avi Loeb says the alignment of a 33 billion tonne object with the ecliptic plane of the Earth around the Sun, while crossing paths with Mars and Jupiter and dodging the debris in the asteroid belt, shows something is amiss.

3I/Atlas origin and trajectory: Interstellar object could have come from a 'conical disk'

3I/Atlas is at Mars, flying by the Red Planet. Mars orbiters have pointed their cameras at the interstellar visitor and are trying to capture the best shots of the comet. Which orbiter is best placed for the job?

3I/Atlas flies by Mars - NASA or ESA? Whose orbiter can get the sharpest shots of the comet?

3I/Atlas could come face-to-face with our Sun's might pretty soon. The Sun could spit a huge amount of coronal mass ejection (CME) soon, which could crash into the comet. Will it kill 3I/Atlas? Or, could its trajectory change?

Interstellar comet 3I/Atlas could soon lose its tail following a beating by our Sun

3I/Atlas has several anomalies for a regular comet. Yet, the scientific community is sure that it is a comet and not an alien spaceship. Harvard scientist Avi Loeb has now presented more data to show that the interstellar object is too big to be a natural piece of space rock.

3I/Atlas anomalies: Its mass is likely bigger than 33 billion tons, too large to be a comet

Interstellar Comet 3I/ATLAS is fast racing towards the inner solar system. It now has a cometary tail and a bright coma. Fresh observations show that the comet is getting brighter, meaning it is becoming more active. 

Latest update on 3I/ATLAS: Interstellar comet is getting brighter

3I/ATLAS is finally growing a tail: New photos of interstellar object 3I/ATLAS show a visible tail spreading in the opposite direction of the Sun. The observations were made during a public educational session. Can we finally agree 3I/ATLAS is an interstellar comet? 

Interstellar object 3I/ATLAS grows visible tail in live Gemini images. So, it's a comet?

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5 reasons why 3I/ATLAS differs from the first interstellar comet 2I/Borisov

NASA's silence on 3I/Atlas down to 'terrestrial stupidity' - Blame govt shutdown

3I/Atlas photo taken by Mars orbiter: TGO captures bright coma but no tail

3I/Atlas trajectory: Interstellar object could have come from a 'conical disk'

3I/Atlas flies by Mars - Which orbiter can get the sharpest shots of the comet?

Interstellar comet 3I/Atlas could soon lose its tail because of our Sun

3I/Atlas anomalies: Its mass is likely bigger than 33 billion tons

Latest update on 3I/ATLAS: Interstellar comet is getting brighter

Interstellar object 3I/ATLAS grows visible tail in live Gemini images