@CNN: After years of research, scientists have confirmed that liquid water exists on Mars. This could allow humans to further explore the red planet. https://t.co/22Cygnq7Lh https://t.co/8EHaYL9Zp8

@CNN: After years of research, scientists have confirmed that liquid water exists on Mars. This could allow humans to further explore the red planet. https://t.co/22Cygnq7Lh https://t.co/8EHaYL9Zp8