Alien oceans could be detected by telescopes
"The goal is to find something Earth-like in almost every sense of the world so we can even prove it has liquid oceans on its surface."
- Tyler Robinson at the University of Washington
The next generation of telescopes could reveal the presence of oceans on planets outside our Solar System.
Detecting water on Earth-like planets offers the tantalising prospect they could sustain life.
Scientists hope the reflection of light, or "glint", from mirror-like ocean surfaces could be picked up by a US space telescope set for launch in 2014.