I think 10 years or maybe even 100 years from now people will look back and ask when was the first Earth-sized planet found.

In 2008, an Earth-sized extrasolar planet was announced to be orbiting this object.

Such Earth-sized planets may be more numerous than gas giants.

It seeks to image brown dwarfs and Earth-sized planets around nearby stars.

Through the technique of interferometry the spacecraft would be able to detect Earth-sized planets.

The probes reported any Earth-sized planet they encountered during their centuries-long voyage.

That implies there are some 10 billion Earth-sized planets in our galaxy.

On Earth-sized planets, plate tectonics is more likely if there are oceans of water; however.

There may well be other, as yet unseen, Earth-sized planets in the habitable zones of these stars.

Earth-sized planets are small, far away, and hidden in the glare of their parent stars.