diff --git a/mars.txt b/mars.txt
index 08a96eea8d01743db33f805aff75c39119343b93..b5dcffe5e4aea799e088985ec969c9bba64bba91 100644
--- a/mars.txt
+++ b/mars.txt
@@ -1,3 +1,4 @@
 Cold and dry, but everything in my favorite color
 The two moons may be a problem for Wolfman
 But the Mummy will appreciate a lack of humidity
+Generating solar energy is less effective on Mars
\ No newline at end of file