IB Physics Orders of Magnitude

Distance to edge of observable universe

10²⁶m

Distance to Andromeda Galaxy

10²²m

Diameter of Milky Way

10²¹m

Distance to nearest star

10¹⁶m

Diameter of Solar System

10¹³m

Distance to Sun

10¹¹m

Radius of Earth

10⁷m

Size of a cell

10⁻⁵m

Size of a hydrogen atom

10⁻¹⁰m

Size of a nucleus

10⁻¹⁵m

Size of a proton

10⁻¹⁷m

Plank length

10⁻³⁵m

Mass of Universe

10⁵³kg

Mass of Milky Way Galaxy

10⁴¹kg

Mass of Sun

10³⁰kg

Mass of Earth

10²⁴kg

Mass of empty Boeing 747

10⁵kg

Mass of an apple

10⁻¹kg

Mass of a raindrop

10⁻⁶kg

Mass of a bacterium

10⁻¹⁵kg

Mass of smallest virus

10⁻²¹kg

Mass of Hydrogen atom

10⁻²⁷kg

Mass of an electron

10⁻³⁰kg

Age of Universe

10¹⁷s

Time of travel of light to nearest star

10⁸s

One year

10⁷s

One day

10⁵s

Period of heartbeat

1s

Period of red light

10⁻¹⁷s

Time of passage of light across a nucleus

10⁻²⁴s