petagram

A petagram is a unit of mass in the metric system, equal to one quadrillion (10^15) grams. It is rarely used in everyday contexts due to its immense size, but it is occasionally employed in scientific and engineering fields to describe very large masses. For example, the mass of the Earth is approximately 5.972 petagrams. The term "petagram" is derived from the Greek prefix "peta-," which means "five," reflecting the unit's position in the metric system as 10^15. The petagram is part of the International System of Units (SI) and is denoted by the symbol "Pg."