NASA launched the Mars Odyssey spacecraft, which reached Mars and transmitted photos back to Earth.

2001 Mars Odyssey is a robotic spacecraft orbiting the planet Mars. The project was developed by NASA with an expected cost of $ 297 million. Launched April 7, 2001 on a Delta II rocket from Cape Canaveral Air Force Station, and reached Mars orbit on October 24, 2001. Its mission was to use spectrometers and electronic imagers to hunt for evidence of past or present water and volcanic activity on Mars. It is hoped that the data Odyssey obtains will help answer the question of whether life has ever existed on Mars. It also acts as a relay for communications between the Mars Exploration Rovers and the Phoenix lander to Earth. The mission was named after the movie 2001: A Space Odyssey.

- Wikipedia

Science Fair Project Information
Title: Mars Science Fair Projects and Experiments
Subject: Astronomy
Grade level: For Elementary, Middle and High School Students and Teachers
Academic Level: Ordinary, Advanced
Project Type: Experimental, Descriptive
Cost: Low, Medium, High
Affiliation: Science Fair Projects and Experiments
Description: A collection of science fair projects about Mars including: topics, ideas, resources and sample projects for elementary, middle and high school students and teachers
Link: http://www.juliantrubin.com/fairprojects/astronomy/mars.html