Challenge Question #3 Deadline Reminder


From: Jan Wee <jwee@mail.arc.nasa.gov>
Subject: Challenge Question #3 Deadline Reminder
Date: Wed, 06 Nov 1996 14:51:23 -0600


Dear discuss-lfm members,

Since our last updates-lfm newsletter (#7) was posted on Sunday
November 3rd, the **DEADLINE** for sending ANSWERS will be 
Sunday, November 10th by 6pm Central.  Hope that gives you
enough time to solve the puzzler:


CHALLENGE QUESTION #3: MOONS OF MARS

Mars has two moons: Deimos and Phobos. If you stood on the surface of Mars
and looked up into the night sky, you would see Deimos slowly travel from
east to west across the sky while Phobos would be slowly traveling from west
to east. In other words, the two Martian moons travel in opposite directions
across the Martian sky. Yet both moons actually orbit Mars in the same
direction.  Explain this apparent paradox.

You are invited to send original student answers to us. We will list the
names of these folks online and token prizes will be given out to a small
number of the students with the best answers. Send your answers to Jan Wee
at jwee@mail.arc.nasa.gov. Please include the words "CHALLENGE
QUESTION #3" in the subject of the email.

        PLEASE INDICATE NAMES (STUDENT AND TEACHER) GRADE, AND SCHOOL 
        FROM WHICH ANSWERS ARE SUBMITTED!


We know this is a extra-challenging CQ!  

Jan Wee, Co-Moderator