There, the debris frequently coalesces into Earth-sized planets.    From Wordnik.com.  [Return Of The Trans-Gender Purple Octopus Aliens « UDreamOfJanie] Reference

But the radio mum - ble came from an Earth-sized world nearer the star.    From Wordnik.com.  [Across The Sea Of Suns]

… And an Earth-sized planet that had not been there five minutes ago.    From Wordnik.com.  [STRANGE NEW WORLDS 10] Reference

The probability is high that there's an Earth-sized object in the Oort Cloud.    From Wordnik.com.  [Michael Brown] Reference

Planet 4 was the world of Akvo, Earth-sized but with 95% of its surface covered by water.    From Wordnik.com.  [Plasma Monster]

This is what is being reported for the smallest object so far - a roughly Earth-sized one.    From Wordnik.com.  [General Relativity as a Tool] Reference

A too-young bright blue star with a single planet, Earth-sized with oxygen-water chemistry.    From Wordnik.com.  [Forever Free]

Rather than forming Earth-sized planets, at best they might form planets the size of our Moon.    From Wordnik.com.  [Analog Science Fiction and Fact]

Astronomers are getting closer and closer to finding an Earth-sized planet in an Earth-like orbit.    From Wordnik.com.  [Does A Twin Earth Exist? | Impact Lab] Reference

It should only be a matter of time before we discover an Earth-sized planet in the habitable zone.    From Wordnik.com.  [HARPS Discovers 32 New Exoplanets | Universe Today] Reference

It is only a matter of time before astronomers find an Earth-sized planet orbiting a distant star.    From Wordnik.com.  [NASA Watch: Space Science News: September 2006 Archives] Reference

It has reached enough material over the past 30,000 years to seed at least 3,000 Earth-sized planets.    From Wordnik.com.  [CNN Transcript Aug 15, 2007] Reference

Forterra Systems, Inc. will license you the technology that created There and its Earth-sized planet.    From Wordnik.com.  [After me, after you] Reference

An Earth-sized planet located inside an even-larger spaceship traipsing around the Galaxy is just plain cool.    From Wordnik.com.  [REVIEW: Marrow by Robert Reed] Reference

No such world has been found yet, but technology is only now becoming capable of detecting Earth-sized worlds.    From Wordnik.com.  [Does A Twin Earth Exist? | Impact Lab] Reference

I'm talking about an architecture that's designed to scale up to Earth-sized worlds, if you've got enough servers.    From Wordnik.com.  [February 17th, 2004] Reference

Ringworld has a habitable flat inner surface equivalent in area to approximately three million Earth-sized planets.    From Wordnik.com.  [10 Best Science Fiction Planets] Reference

The gravitational lens array showed a full-sized solar system, though: five gas giants plus two Earth-sized worlds.    From Wordnik.com.  [Across The Sea Of Suns]

No, not Johannes Kepler, the Kepler Mission which aims to determine how many Earth-sized planets are in the galaxy.    From Wordnik.com.  [Archive 2009-03-03] Reference

BRIEF SYNOPSIS: The human captains of an alien, Jupiter-sized spaceship discover an Earth-sized planet at the ship's core.    From Wordnik.com.  [REVIEW: Marrow by Robert Reed] Reference

Gas giants might send more comets than they deflect towards their Earth-sized brethren, they found in an earlier analysis.    From Wordnik.com.  [Astronomers hunting alien Earths] Reference

Even if some principle leads to roughly Earth-sized rocky planets, they are bound to vary in size by an order of magnitude.    From Wordnik.com.  [Earthlike Planets] Reference

With NASA's Kepler mission showing the potential to detect Earth-sized objects, habitable moons may soon become science fact.    From Wordnik.com.  [NASA Watch: Space & Planetary Science: December 2009 Archives] Reference

The Kepler mission is the first attempt to look for Earth-sized worlds in habitable zones -- places where liquid water can exist.    From Wordnik.com.  [Space Diary: Life beyond Earth] Reference

Of the other 75% older than our own, many Earth-sized planets once habitable will have lost their inner radioactivity and worn away.    From Wordnik.com.  [Analog Science Fiction and Fact]

To date, no Earth-sized planet has been discovered.    From Wordnik.com.  [Aero-News Network] Reference

However, other objects like the Earth-sized white dwarfs.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

There's a big difference between Earth-sized and Earth-like.    From Wordnik.com.  [Ars Technica] Reference

Google's own Earth-sized mapping app ... (follow link to read).    From Wordnik.com.  [Megite Technology News: What's Happening Right Now] Reference

It's mission: Spot Earth-sized planets orbiting distant stars.    From Wordnik.com.  [WN.com - Articles related to NASA: No word from Phoenix Mars lander] Reference

SOHO images that show several Earth-sized spheres near the Sun's corona.    From Wordnik.com.  [WN.com - Articles related to  Mars Rover not dead - Nasa] Reference

Huge comet punches an Earth-sized hole in Jupiter - and an amateur discovers it.    From Wordnik.com.  [WN.com - Articles related to Hauritz anticipates Strauss challenge] Reference

Alpha Centauri, could host Earth-sized planets, new computer modeling indicates.    From Wordnik.com.  [SPACE.com] Reference

What everyone wants to find are rocky, Earth-sized planets that have atmospheres.    From Wordnik.com.  [Science News / Features, Blog Entries, Column Entries, Issues, News Items and Book Reviews] Reference

The discovery opens up the possibility of smaller, Earth-sized extrasolar planets.    From Wordnik.com.  [infoplease - Daily Almanac] Reference

For an Earth-sized planet, that would mean the star becoming dimmer by just 0.01 per cent.    From Wordnik.com.  [Telegraph.co.uk: news business sport the Daily Telegraph newspaper Sunday Telegraph] Reference

If there are Earth-sized planets present, they are too small to see with current technology.    From Wordnik.com.  [The Seventh Sense] Reference

Astronomers will soon find scores of Earth-sized exoplanets, but imaging them may be decades away.    From Wordnik.com.  [SEEDMAGAZINE.COM] Reference

Google's own Earth-sized mapping app ... (follow link to read) - Google today launched its first version of Google Earth for Android.    From Wordnik.com.  [Megite Technology News: What's Happening Right Now] Reference