Pan-STARRS 1

On October 19, the Pan-STARRS 1 survey telescope in Hawaii captured a faint streak of light during its nightly search for asteroids and comets. Astronomer Rob Weryk realised it had a trajectory unlike anything seen before, and follow-up data taken over the next few nights confirmed it had come from outside our solar system. Humanity had identified its first alien visitor from another star.

Its unusual elongated shape has even prompted some to question whether it might have been created artificially by an alien civilisation.

But my colleagues and I have now discovered that while it appears to be an unusually long rocky asteroid it may actually be an icy body covered in a protective crust of organic chemicals.

Source: https://dailyaccord.com/interstellar-alien-object-wrapped-inside-unusual-organic-based-coat/