Is ‘Oumuamua an Interstellar Asteroid or Comet?

Oumuamua, the first confirmed interstellar object, was discovered in 2017. Scientists used various observatories, including NASA's Hubble Space Telescope, to study its unexpected speed boost and trajectory. The object exhibited non-gravitational acceleration, likely due to gas jets, similar to comets. However, unlike typical comets, Oumuamua showed no visible coma or tail, possibly due to sparse or large dust particles. Although further observations are impossible due to its distance, future sky surveys aim to detect more interstellar visitors.

How do scientists believe Oumuamua's acceleration is generated?

What future actions will be taken to search for more interstellar objects like Oumuamua?