We learned before that sometimes teeth don't show up in the right places.
When a tooth doesn't show up in the right place it is called an Impacted Tooth.
The tooth that gets impacted the most is the wisdom tooth.
Most of the time when a tooth is impacted it's because there wasn't enough room in the mouth for the tooth to come up, so it gets pushed off to the side or below, and can come out of the gums at the wrong place.
Another ancient castle is Buda Castle, built in 1265 in Budapest, Hungary.
This is a big castle that has been the home of the kings of Hungary, and has been built and added onto for over 400 years.
There are many towers, cellars, chambers, museums, caves and famous works of art in this castle.
A few more of the seventy were listed that we don't know much about:
Phlegon - bishop of Marathon
Hermes - bishop of Dalmatia
Patrobulus - bishop of Puteoli
Hermas - bishop of Philippi
One of the ones we know a little more about is Linus - bishop of Rome.
The apostle Peter was known as the first leader of the Christian church after Jesus' death.
Linus took over after Peter, and Linus was known as the first Pope.
This is a bronze sculpture made around 800 BC, and is the oldest ancient Chinese sculpture with the words "Middle Kingdom" or "Zhong Guo" meaning "China" on it.
It is a "Zun" sculpture, which is a kind of vase used to hold wine for pouring.
The sculpture is 15 inches tall, and weighs about 30 pounds.
There is writing on the inside in Chinese that talks about how the city of Louyang was built in China.
The He Zun was found by a local farmer who did not know what it was, so he sold it to a waste recycling center where someone would have melted the sculpture down for the bronze metal.
Luckily a historian saw it and rescued it, and then cleaned it up and put it in a museum.
A lot of the sensors we've been talking about are all part of Attitude Control.
This means controlling where the rocket is and which way it is pointing.
The attitude of the rocket is where the rocket is moving, whether it's up, down, left, right, forward back.
Another type of cephalopod is the Humboldt Squid, also known as the jumbo squid, jumbo flying squid, pota, or diablo rojo (red devil).
These squid can gro from 5 feet to 8 feet long, they live in the Pacific Ocean, and usually live around 1,000 feet under the water.
Just like some other cephalopods, they can change colors from white to red, which is where they get the nickname "red devil".
Sometimes these squids will talk to other nearby squids by flashing different colors!
This squid is a hunter, and when it is hunting other small fish it uses all of its 8 arms and 2 tentacles to reach out and grab the smaller fish or other animals it is hunting, then pull them into its mouth where it has a sharp beak used to cut up and eat the animals.
They are super fast hunters and can swim up to 15 miles per hour!
Some people have been attacked by this type of squid, but scientists think that only happens when the squid are feeding on other prey and are hunting.
When these squid get angry they have even attacked and broken deep sea cameras sent down to look at nature.
