Cool
You say the weak force is the weakest force of nature. It's only the weakest nuclear force. I'm pretty sure gravity is weaker. If gravity was stronger than nuclear forces it would be able to pull atoms apart.
Also, a water molecule should only have 10 electrons. You've got 12 there.
You say one quarter of all the cells in your body are red blood cells, but you should say one quarter of all the human cells. Ninety percent of the cells in or on your body are microbes. Yeah, Wikipedia said it wrong. I tried tracing its sources but couldn't find where in the sources that particular bit of info was given.
You say F and M are the 6th and 13th numbers. They are letters, not numbers. You make the same mistake with AM radio.
In the wandering albatross description you say every instead of very.
You say Asia is the largest object that isn't astronomical, but then you have the Minecraft world and the total human height.
Kapteyn's Star is spelled Kapetyn's Star in the description. And La Superba is referred to as Las Superba in the description.
Your silt particle description should say "to the right" instead of "to the left." In the Washingont Monument description, you refer to the Eiffel Tower as being on the left when it's on the right. The Capella description also mixes it up.
The Capella description also says that most stars are binary. This is false. Most of the stars we can see with the naked eye are binary, but two thirds of the stars in our galaxy are single dim red dwarfs.
You say an AU is 150 million kilometers, to be exact. That's not exact, though. And the sun isn't always that distance away. That's just the mean distance.
I'm ignoring most grammatical errors, but look at the light-year description. "A light-year is are one the most common units of length..."