There have been a number of claims of such discoveries, but none have been definitively confirmed.

One of the most famous claims is that of the Murchison meteorite, which was found in Australia in 1969. The Murchison meteorite contains a number of organic molecules, including amino acids, which are the building blocks of proteins. Some scientists have argued that these organic molecules could not have formed in the solar system, and must therefore have come from beyond.

However, other scientists have argued that the organic molecules in the Murchison meteorite could have formed in the solar system, and there is no definitive evidence to support the claim that they came from beyond.

Another claim of the discovery of samples from beyond the solar system is that of the Allan Hills 84001 meteorite, which was found in Antarctica in 1984. The Allan Hills 84001 meteorite contains a number of tiny structures that some scientists have argued are fossilized bacteria. However, other scientists have argued that these structures are not fossilized bacteria, and there is no definitive evidence to support the claim that they are.

Ultimately, the question of whether or not we have found samples from beyond the solar system is still unanswered. Further research is needed to definitively confirm or refute the claims that have been made.