Researchers just discovered evidence to suggest that Mars was once home to oceans and sandy beaches on the red planet, according to data published by the Proceedings of the National Academy of Sciences.

Scientists have used orbiters and rovers to find dried streams, lakes, and gullies on Mars that hint at its watery past, but their cavalry of robots has struggled to prove the Red Planet ever had an actual ocean.

"We found evidence for wind, waves, no shortage of sand—a proper, vacation-style beach," said study co-author and Pennsylvania State University geologist Benjamin Cardenas. Cardenas' team's findings align with previous research that points to the existence of a liquid Martian ocean billions of years ago.