No, you have to choose just one imaging target in your essay. To be able to describe which target will return the most interesting scientific data is one of the main points of this activity.

This contest is open to all students in the U.S. in grades 5 to 12. Entries will be divided between into three groups: grades 5 to 6, grades 7 to 8; and grades 9-12.

Yes.

Yes.

Yes.

Yes, but you must indicate in which grade each student is. The highest-grade student in the group determines the grade category of the essay (i.e. if you are in 6th grade working with a student in 9th grade, the essay will be entered in the 9-12 grade group).

Yes, your peers -- the jury judging your essay -- must be able to comprehend your argument.

No, it doesn't.

Send an email to scientistforaday@jpl.nasa.gov