10 18 
DISTANCE FROM THE MILKY WAY TO THE 
NEAREST GALAXY 
Length: 2,5 Em
10 15 
A LIGHT-YEAR 
Length: 9,4607304725808 Pm
DISTANCE 
FROM THE SUN 
TO SATURN 
Length: 1,4294 
Tm 
10 12
SUN DIAMETER 
Length: 1,391684 
Gm 
10 9
Cádiz 
Barcelona 
DISTANCE 
FROM CÁDIZ 
TO 
BARCELONA 
Length: 9,3 Mm 
10 6
KINGDOM TOWER 
(JEDAH) 
Lenght: 1 km 
10 3
A LOUSE 
Length: Between 
0,5 to 8 mm 
10 -3
10 -6 
A BACTERIUM 
Length: Between 0,5 to 5 μm
10 -9 
THE SMALLEST VIRUS 
Lenght: 24 nm
10 -12 
DIAMETER OF THE 
NUCLEI OF AN ATOM 
Length: 50 pm
10 -15 
RADIUS OF A PROTON 
OR A NEUTRON 
Length: 1.25 fm
AN ELECTROM 
Length: 1 am 
10 -18

Distances