Planet Tac Toe
Aliens have challenged you to a game of Planet-Tac-Toe. You can win
only if you have become a solar system expert. To start the game,
choose a square by clicking your mouse in it. Your trivia question will
appear. Click on the white box below the question and type in your answer.
Then hit the [return] key or select the "Check Me" button.
If your answer is correct, an "X" will appear in the square you selected.
If your answer is incorrect, the
alien will provide the correct answer and place his mark in the
Click on the space you want to get your question.
The StarChild site is a service of the
High Energy Astrophysics Science Archive
Research Center (HEASARC),
Dr. Alan Smale (Director), within the
Astrophysics Science Division (ASD) at
StarChild Authors: The StarChild Team
StarChild Graphics & Music: Acknowledgments
StarChild Project Leader: Dr. Laura A.
Curator: J.D. Myers
Responsible NASA Official: Phil Newman