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This is Spaceman Stan!

While he was out exploring, Stan's spaceship 

crashed on the moon! He needs your help to 

fix it so he can get back home to his family.

Now, Stan needs to fix the Control 

Panel. It is dark in the ship, but our 

eyes have a trick up their sleeves. Rods 

and Cones are photoreceptors in our 

eyes. Rods help us see in the dark, 

while Cones see light and detect color. 

Now that we know about Rods and Cones, which 

of the two do we need to solve this problem? Stan 

is down in a mess of wire, and it is very dark.

Which receptor helps us see in the Dark?

Rods! Now help Stan match the colored wires 

together.

Great work! Now the spaceships lights are 

working!

Now that the lights are on, it is a lot easier for 

us to see. To repair the engine, Stan needs to 

pull up the green and blue levers. Which 

receptor do we use to see color?

Thats right, Cones!

Now help Stan pull up the levers.

Great work! But we aren't done yet.

Whoah, this is the control room for Stan's 

Spaceship! To launch the spaceship, we need to 

help Stan locate the green launch button, 

between two red buttons. It might be hard to 

spot, but our brains see color in three ways: 

Hue, saturation and brightness.

Brightness is how bright it is, while saturation is 

how dark it is. And Hue is the actual color that 

we perceive. 

Using this knowledge, can you find the button?

Good Job! Now we are off to photograph aliens!

Now that the spaceship is up and running, it is 

time for Stan to observe the aliens on the 

moon! This camera functions exactly how our 

eyes do, light enters through our cornea, or 

the camera lens. Then, the light passes 

through our pupil - the black part of our eye. 

After that, the iris adjusts to let more light in 

or keep light out. The iris is the colored part of 

the eye, such as blue, green, or brown. This 

entire function happens inside Stan's camera, 

except it captures the image.

Stan needs to take a picture of one kind 

of alien that makes a certain sound. 

Your ear detects certain vibrations 

called sound waves. We physically begin 

to hear when our eardrum is pressured 

from vibrating air molecules. 

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