The chart also provides pointers for the unknown. Dark matter, which makes up around 27% of the universe (normal matter makes up only 5%), is not on the chart because scientists don’t know what ...

Object Details maker Strobridge Lithographic Company Description Sebastian C. Adams’s Chronological Chart of Ancient, Modern and Biblical History is a colorfully illustrated scroll approximately 27.5 ...

Object Details Description Benjamin Lipsner, superintendent of the Post Office Department’s airmail service, used this chart to record information about the first week of flights. The chart is ...