Mars holds oceans of water: A game-changer for space exploration? 

Scientists have made a groundbreaking discovery on Mars, revealing new evidence that the planet harbors enough liquid water to "fill oceans" beneath its surface.

For years, probes and landers have been dispatched to the Red Planet in search of clues about the water that once flowed on Mars billions of years ago—a key to understanding whether life ever existed there. Now, data from NASA's Insight lander has uncovered a massive underground reservoir of liquid water.

Experts estimate that this subterranean water could cover the entire planet to a depth of one to two kilometers. However, there's a catch for those dreaming of colonizing Mars: the water is trapped in minuscule cracks and pores deep within the Martian crust, between 11.5 and 20 kilometers below the surface. Even on Earth, drilling to such depths is a formidable challenge, making it highly unlikely that we could access this Martian water with our current technology.

* Yahoo News contributed to this article.