Above a calm, dark ocean, a huge, bloated red sun rises in the sky - a full ten times the size of our Sun as seen from Earth. Small waves lap at a sandy shore and on the beach, something stirs...

This is the scene - or may be the scene - on what is possibly the most extraordinary world to have been discovered by astronomers: the first truly Earth-like planet to have been found outside our Solar System.

The discovery was announced today by a team of European astronomers, using a telescope in La Silla in the Chilean Andes. If forced bookies to slash odds on the existence of alien beings.

The Earth-like planet that could be covered in oceans and may support life is 20.5 light years away, and has the right temperature to allow liquid water on its surface.
his remarkable discovery appears to confirm the suspicions of most astronomers that the universe is swarming with Earth-like worlds.

We don't yet know much about this planet, but scientists believe that it may be the best candidate so far for supporting extraterrestrial life.

The new planet, which orbits a small, red star called Gliese 581, is about one-and-a-half times the diameter of the Earth.

It probably has a substantial atmosphere and may be covered with large amounts of water - necessary for life to evolve - and, most importantly, temperatures are very similar to those on our world.

It is the first exoplanet (a planet orbiting a star other than our own Sun) that is anything like our Earth.

Of the 220 or so exoplanets found to date, most have either been too big, made of gas rather than solid material, far too hot, or far too cold for life to survive.

"On the treasure map of the Universe, one would be tempted to mark this planet with an X," says Xavier Delfosse, one of the scientists who discovered the planet.

"Because of its temperature and relative proximity, this planet will most probably be a very important target of the future space missions dedicated to the search for extraterrestrial life."

Is There Life on Mars?

With each passing day, those peppy robots on Mars - Spirit and Opportunity - churn out extraordinary new views of the red planet. Each robot is over a year in operation, relaying a steady stream of eye-catching photos.

And more than once, the Mars machinery has sent back an image that stirred up a promising eureka moment: Finding evidence for life on that remote world.

A case in point, during a recent run of Spirit in the Columbia Hills, the robot used its arm-mounted devices to poke and probe a select Mars rock. One piece of hardware -- the Rock Abrasion Tool, known better as the RAT -- is on hand to expose fresh martian rock.

The RAT utilizes a single diamond matrix wheel to scrape the rock surface. It does this ever so slightly and progressively to achieve a wanted depth. The abraded surface is actively swept clean by a brush to prepare it for scientific examinations.

Once the rock was worked over, Spirit's Microscopic Imager went in for close-up looks at the results.

And within the images, an odd feature could be seen, seemingly a pattern of something more biological than just rock.