Faszination Astronomie: Interstellare Objekte

On July 1, 2025, 3I/ATLAS was discovered—the third interstellar object, following 1I/’Oumuamua and 2I/Borisov, to make a single pass through our solar system before disappearing back into the depths of space. Following their discovery, sensational headlines quickly emerged claiming that the interstellar objects were man-made or even extraterrestrial spacecraft. In fact, ’Oumuamua resembled an asteroid, while 2I/Borisov and 3I/ATLAS looked like comets. They were surrounded by a dense gas envelope encasing a core of ice and silicates and exhibited a tail of particles drifting away from the object. All three objects were intensively studied as they passed through the solar system—in this lecture, Dr. Carolin Liefke reveals what we have learned so far about their properties and origins.

Dr. Carolin Liefke holds a Ph.D. in astrophysics and is the deputy director of the House of Astronomy.

For more information, visit:https://www.haus-der-astronomie.de/events/46149/3830874