Tuanortsa is a Palindromic poem. A palindrome reads the same from front to back as from back to front. Palindromes in a single word would be level, radar, eye, civic, rotor etc.
A palindromic poem need not be quite as tricky as turning a word inside out. The lines can simply be mirrored so that the sequence reverses order and the lines read the same from bottom to top as they do from top to bottom. This was presented to me as a poetry exercise. Why it was called Tuanortsa, astronaut spelled backward, makes no sense to me because the word it isn’t a palindrome. Be that as it may, there was only one requirement of the exercise, write a ‘poem’ that makes sense when read, line by line, from bottom up as well as from top down. There should be no fewer than 6 lines but there may be more. Meter and rhyme are at the discretion of the poet.
Pasted from http://www.poetrymagnumopus.com/index.php?showtopic=1918
My thanks to Judi Van Gorder for years of work on this fine PMO resource.