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Background Information 

Send the following message in the chat. 

“My name is _____ and I am the Radius team member.” 

Unmute yourself and read the message out loud to ensure that it has been received by your teammates. Follow the same procedure for all other messages you send throughout the mission.

 
image of a scientist
Hi there! I’m Tessa, a scientist who recently submitted a proposal to the James Webb team. I’ll be popping up throughout the mission with helpful tips and advice.

Watch the next two videos to get background information on key concepts you will use throughout the mission. Please watch both videos in their entirety. This will not cause you to fall behind your other team members.
Based on the video, please complete the following checkpoint about Light Curves.

Light curve checkpoint

Review the following image for an outline of some of the units you will be using. Using Earth and Solar units help scientists visualize exoplanets and their host stars more easily. Try picturing a planet with a radius of about 4,000 miles. Now try picturing a planet with a radius close to that of Earth. Which one is easier to imagine?
Earth Units
Units based on the characteristics
of our planet Earth
We use Earth units to express
other planets'
- mass
- radius
- period
Astronomers use this symbol to
represent Earth!

Solar Units
Units based on the characteristics
of our star the sun
We use Solar units to express
other stars'
- mass
- radius
Astronomers use this symbol to
represent the sun!
Based on the video, please complete the following checkpoint about density.

Density Checkpoint

Our goal is to find the density of the exoplanet. This is why your team will be working to find the radius, which will help you to find the volume of the exoplanet.
 
Density=Mass over volume. Red arrow pointing at the voulme aspect
 
image of a scientist
Oh! By the way, during the mission, you will receive requests for information from your team members. If you have already calculated that piece of information, share it with your teammate in the chat. If you are not ready yet, send the following message in the chat.

"Request received. Information not yet available."

Then, send the information in the chat as soon as it is available.
 
image of a scientist
You now have all the background information you need and you’re ready to move on to the next part of the mission.