Summary:
- In 2017, astronomers detected an unusual object passing through our solar system, later named 'Oumuamua. This was the first known interstellar object to visit our solar system.
- 'Oumuamua's unusual shape and behavior, such as its unexpected acceleration, puzzled scientists and sparked a flurry of research to understand its origins and nature.
- The discovery of 'Oumuamua has opened up new avenues of research, leading to a better understanding of how planetary systems form and evolve, and the potential for interstellar objects to carry information or even life between stars.