Page 8Mars: A World with a Watery Past
Mars is cold and dry today, but winding valleys and layered rocks show that liquid water flowed here long ago.
My sticker book
Tap a sparkling star on any page to meet a space friend and keep their sticker.
Tap a sparkling star on any page to meet a space friend and keep their sticker.
Mars is cold and dry today, but winding valleys and layered rocks show that liquid water flowed here long ago.