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<p>structures although the latter is present due to probe exploration (see also <a href="page.php?w=List_of_artificial_objects_on_extra-terrestrial_surfaces">List of artificial objects on extra-terrestrial surfaces</a>).</p>

<p><big> Extraterrestrial organic compounds </big></p>
<p>Increasingly, organic compounds are being found on objects throughout the Solar System. While unlikely to indicate the presence of extraterrestrial life, all known life is based on these compounds. Complex carbon molecules may form through various complex chemical interactions</p><p>
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