Harvard astrophyscists claim space rock could be an alien probe

Oumuamua, the first interstellar object detected in our solar system, was discovered in 2017. It is 800 meters long and 80 meters wide, with unknown composition, possibly metals or rocks. Theoretical studies suggest it might be extraterrestrial, using a light sail for propulsion. Some researchers propose it could be an alien space probe, but this is disputed. NASA observed it traveling at 64,000 km/h, exiting the solar system in January 2019, heading towards the Pegasus constellation.

What speed was Oumuamua traveling at when observed by NASA?

What is the next destination of Oumuamua after exiting the solar system?