Chemical and isotopic studies showed that it originated on Mars.
The meteorite known as Allan Hills 84001, usually abbreviated ALH 84001 or ALH84001, is one of the most famous rocks ever discovered and remains central to the scientific search for evidence of life beyond Earth. Found on December 27, 1984, in the Allan Hills region of Antarctica by a United States meteorite-hunting expedition
The Float Glass method became commercially viable in the 1960s and has remained the dominant technique ever since.
Glass windows have a history that stretches back over two millennia, with the earliest examples appearing in Roman times. By the 1st century CE, the Romans had developed techniques for producing small panes of glass by casting molten glass into molds and flattening it into sheets. These early windows were cloudy and uneven, but they marked the beginning of transparent architectural elements.
