The video discusses the first interstellar object observed by humans, discovered in 2017. Scientists struggled to determine its characteristics due to its unusual orbit and speed. Avi Loeb proposed it might be an alien probe, sparking debate among researchers. While some studies suggest a natural origin, Loeb argues the data is incomplete and advocates for further sky monitoring. His book reinforces his alien craft theory.

What was the conclusion of the international team of researchers in 2019 about 'Oumuamua?

What did Avi Loeb suggest was necessary to learn more about objects like 'Oumuamua?