Astronomers have spent decades searching for objects from outside our own solar system. But it is precisely when all hope seems lost that the most marvelous things occur. This was the situation for these astronomers.
After decades of nothing, something completely unexpected happened. Two objects arrived at once. Scientists and astronomers from across the globe, Seti, and even NASA participated in the investigation of these mysterious visitors.
What can we learn from them? How did they get started? Where did they originate? When can we anticipate the arrival of the next one?