Planets · #96 biggest of 1,014
How big is Halley's Comet nucleus?
11 km
Halley's Comet nucleus measures 11 km. That's about 33 Eiffel Towers lined up end to end.
By the numbers
- That's 11 km, or about 6.84 miles.
- It's about 6,471 times taller than an average adult (1.7 m).
- Roughly 33 Eiffel Towers could line up across it.
- Walking nonstop, you'd need about 2.18 hours to travel its length.
- Out of all 1,014 things in this collection, it ranks #96 by size.
Size comparison
How Halley's Comet nucleus stacks up against things of a similar size. Tap any bar to explore it.
Jiaozhou Bay Bridge
26.707 km
Phobos (moon)
22.6 km
neutron star
20 km
Deimos (moon)
12.3 km
Halley's Comet nucleus
11 km
Mariana Trench (depth)
10.994 km
Mount Everest
8.849 km
K2
8.611 km
Kangchenjunga
8.586 km
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
Standing beside it, an average person (1.7 m tall) would reach only about 0.015% of its height.
More in Planets
Tip: swipe, use the arrow keys, or scroll past the edge to jump between sizes.