Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of planets Sarah Knapton is the Science Editor of The Telegraph and has covered ...

Artwork: Six worlds around a star like our Sun are ideal to study how planets formed and whether they are home to life Researchers have located "the perfect solar system", forged without the violent ...

A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer. The enormous interstellar object, now officially dubbed 3I/ATLAS, is already ...

European scientists have revealed that the interstellar comet 3I/ATLAS was captured in unprecedented detail by the European Space Agency's JUICE spacecraft on 6 November 2025, when the mission was en ...

A small asteroid or comet is believed to be the first confirmed "interstellar object" to have entered our solar system from somewhere else in the galaxy. Moving between stars and occasionally passing ...

Scientists have just completed an extensive search for signs of alien communications technology in the Milky Way's 'solar system 2.0'. Penn State astronomers and scientists at the SETI Institute, ...

Scientists are looking for evidence of alien technology in a faraway solar system with the most perfect mathematical alignment and synchrony of planets ever seen. The solar system, about 100 light ...

Comets are often treated as leftovers, but sometimes the leftovers become the primary focus. That is the case with 3I/ATLAS, only the third known interstellar object seen crossing the solar system, ...

No other star is known to have approached this close to us. An international team of researchers says it came five times closer than our current nearest neighbour - Proxima Centauri. The object, a red ...