Pennsylvania students are invited to enter the PennDOT Bureau of Aviation's annual art contest.

This year's contest theme, "50 Years of American Space Flight," encourages students to learn more about aviation, from airplane development to flights into space.

Entries will be judged in two divisions: first through third grades, and fourth and fifth grades. Entries must be postmarked by Nov. 29. There will be 22 statewide winners, with one winner from each division selected from each of PennDOT's 11 district offices.

Winners will receive a certificate signed by Schoch and an enlarged copy of their entry. The students' schools will also receive an enlarged copy of the artwork for display.

Artwork should be submitted on 8.5-by-11-inch or 9-by-12-inch paper, unframed, unmatted and unlaminated. All work must be done by hand (there is an exception for children with physical challenges). Permitted formats are: acrylic, oil paint, felt-tip pens, indelible ink, soft ballpoint pens, watercolor or crayons. Formats that are not permitted include: non-permanent media such as pencil or charcoal, computer-generated artwork and collage work using photocopies.

The back of each submission should include the student's name, teacher's name, grade level, county and school address and phone number. Entries will not be returned. Winners' schools will be notified by telephone.

Send entries to: Bureau of Aviation, c/o William Sieg, 400 North St., Harrisburg, PA 17120 or P.O. Box 3457, Harrisburg, PA 17120-0064. Last year's winners are viewable under the Bureau of Aviation's "Education & Career Center" section at www.dot.state.pa.us. For more information, call (717) 783-8800.