Tektites are not meteorites, even though people constantly assume they are

Tektites, including moldavite, are a genuinely common point of confusion because they are so closely associated with meteorite impacts, but they are not meteorites themselves. A tektite forms when a large impact melts terrestrial rock and ejects it into the atmosphere, where it cools into natural glass before falling back to earth, sometimes a considerable distance from the actual impact site. The material started on earth, was transformed by the energy of an impact, and landed back on earth, whereas a meteorite is material that itself fell from space. It is a small but real distinction that matters for accurate identification and for anyone researching a specific piece.