Yes, the Earth's inner core is bigger than Pluto. Here's why:

* Inner Core Size: The Earth's inner core has a radius of approximately 1,220 kilometers (758 miles).

* Pluto Size: Pluto has a diameter of 2,376.6 kilometers (1,476.7 miles), making its radius about 1,188.3 kilometers (738.3 miles).

Therefore, the Earth's inner core, with a radius of 1,220 kilometers, is slightly larger than Pluto's radius of 1,188.3 kilometers.