Sabadell astronomer captures images of interstellar comet 3I/ATLAS

Physics student Joan Miquel González Navarra explains the scientific importance of the object and debunks conspiracy theories.

Generic image of an observatory telescope pointing towards the star-filled night sky.
IA

Generic image of an observatory telescope pointing towards the star-filled night sky.

The astronomer from Sant Cugat, Joan Miquel González Navarra, was one of the first to capture images of the interstellar comet 3I/ATLAS on November 9, 2025, from the Sabadell Observatory.

The young man, a Physics student at the University of Barcelona (UB), achieved the feat using a telescope at the Sabadell Observatory. The images garnered global attention, even being cited by the renowned science popularizer Brian Cox. González Navarra explains that his passion for astronomy started early, inspired by documentaries like Cosmos.

"The 3I/ATLAS comet is interstellar and, therefore, is not part of the solar system; it comes from outside."

Joan Miquel González Navarra · Astronomer at Sabadell Observatory
This event is exceptional, as 3I/ATLAS is only the third interstellar body discovered passing through our system. It is estimated that this comet could be 10 billion years old, making it much older than our solar system (4.5 billion years). Its interest lies in its different chemistry and the fact that its hyperbolic orbit means it will leave without being trapped by the Sun.

"This is really wonderful. A visitor from another solar system that may well be older than our solar system. I think with all the nonsense around this comet we’re in danger of missing how fascinating it is."

Brian Cox · Professor and Science Communicator
González Navarra pointed out that the media attention was fueled by conspiracy sectors claiming the comet was an alien spaceship. The astronomer was satisfied to have helped demonstrate that the celestial body was exactly where it should be, according to astronomical calculations.

"I believe there is life outside <b>Earth</b>, but I am not clear how likely it is that this life will eventually evolve to reach a level of civilization like ours."

Joan Miquel González Navarra · Astronomer at Sabadell Observatory
Currently, González Navarra is finishing his Physics degree and works as a secretary and guide at the Agrupació Astronòmica de Sabadell, the association with the most members in all of Spain. His future goal is to pursue a Master's and a PhD in astrophysics to become a scientific researcher.