Attogram [ag]
The attogram is a metric unit of mass equal to one-quintillionth of a gram.
1 attogram = 0.000000000000000001 grams = 10⁻¹⁸ grams
1 attogram = 10⁻²¹ kilograms
Symbol: ag
Key Facts:
Used in cutting-edge scientific fields like nanotechnology, physics, and molecular science
The prefix "atto-" means 10−1810^{-18}10−18 (one quintillionth)
Enables measurement of extraordinarily tiny masses, such as single molecules or atoms
The attogram is vital for quantifying masses at the smallest scales currently measurable in science.
The mass of the Earth is approximately 5.972 × 10²⁴ kilograms.
This massive value represents the total amount of matter contained in our planet, influencing gravity, orbital dynamics, and geological processes.
Summary:
Mass ≈ 5.972 × 10²⁴ kg
Determines Earth’s gravitational pull
Fundamental for planetary science and astronomy