Computer models have accurately forecast conditions on Mars and are valid predictors of climate change on Earth, U.S. and French astronomers said on Tuesday.

These computer programs predicted Martian glaciers and other features on Earth's planetary neighbor, scientists found.

"Some public figures imply that modeling of global climate change on Earth is 'junk science,' but if climate models can explain features observed on other planets, then the models must have at least some validity," lead researcher William Hartmann of the Planetary Science Institute said in a statement.