# Newton’s three-body problem explained - Fabio Pacucci

## Important Vocabulary Words From The Video

To gravitate is to move towards something. If you have a heavy object, it will tend to move towards the ground.

• The planets gravitate towards the sun.
• The molecules in the water gravitate towards the center of the glass.

Solvable means that there is a solution to something. When you say that something is solvable, you mean that there is a way to solve the problem.

• The problem is not solvable, because there is not a solution that everyone can agree on.
• The problem is solvable, because there are many possible solutions that everyone could agree on.

To untangle something is to loosen the knot or string that is holding it together. When you untangle a knotted cord, you free the string.

• After he untangled the cord, he was able to turn the light on.
• The string was tangled around the branch, so the children were unable to play.

Unsolvable means that something cannot be solved. This might be because the problem is too big or because there is no solution that is satisfactory to both sides.

• The problem is unsolvable because there is too much money involved.
• The problem is unsolvable because nobody knows how to do it.

Timescales are a way of measuring how long something will take. They are usually measured in hours, days, weeks, or months.

• It will take them two weeks to process the data.
• The project is scheduled to be completed in six months, but it may take longer than that.

astronomically is used to describe something that is very strange or out of the ordinary. When you say that something is astronomically high, you mean that it is very high in comparison to what is normal.

• The temperature was astronomically high today.
• The price of the car was astronomically high.

The smallest is the least of something. The smallest size of pasta is called a minestrone. The smallest amount of sugar is called a teaspoon.

• The smallest size of pizza is called a personal size.
• The smallest amount of sugar is called a tablespoon.

To approximate something is to try to figure out or approximate its size, shape, or other characteristics. When you're trying to approximate the size of something, you might use a ruler or a measuring tape.

• She was trying to approximate the size of the painting with her hands.
• He was trying to approximate the sound of the bell by listening to it.

To exert oneself is to work very hard. When you exert yourself, you put your whole body into the work that you're doing.

• She exerted herself by running all the way around the track.
• He exerted himself by lifting the heavy suitcase.