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  • Carrie Felsher

    Is the Rocky Alien Planet Gliese 581d Really Habitable? Gliese 581d and Gliese 581g | Space.com

  • Pavlos Stefanos

    The orbits of planets in the Gliese 581 system are compared to those of our own solar system. The Gliese 581 star has about 30 percent the mass of our Sun, and the outermost planet is closer to its star than the Earth is to the Sun. The 4th planet, G, is a planet that could sustain life. Credit: Zina Deretsky, National Science Foundation

  • Nick Cucco

    What Would A Rocky Exoplanet Look Like? Atmosphere Models Seek Clues - Yahoo News

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Asteroid diversity points to a "snow globe" solar system by The Watcher on January 31, 2014, Jupiter's migration through the solar system has swept asteroids out of stable orbits, sending them careening into one another. As the gas giant planets migrated, they stirred the contents of the solar system. Objects from as close to the Sun as Mercury, and as far out as Neptune, all collected in the main asteroid belt, leading to the diverse composition we see today. Credit: David A. Aguilar (CfA)

A planet four times the size of Earth may be skirting the edges of the solar system beyond Pluto, according to new research. Too distant to be easily spotted by Earth-based telescopes, the unseen planet could be gravitationally tugging on small icy objects past Neptune, helping explain the mystery of those objects' peculiar orbits. The claim comes from Rodney Gomes, a noted astronomer at the National Observatory of Brazil in Rio de Janeiro.

15 Things You Didn’t Know About Outer Space... (Fact 5 is wrong: According to the picture, yes, Jupiter is the second largest planet, and Saturn’s density is the lightest in the entire solar system, however, the planet itself is only lighter than Jupiter and Neptune, making Saturn the 3rd heaviest planet in the solar system)

|| Astronomers have discovered an Earth-size planet orbiting one of the nearest stars in our galaxy.

Scientists have made a stunning discovery in the outer realm of the solar system — an asteroid with its own set of rings that orbits the sun between Saturn and Uranus. The space rock is the first non-planetary object ever found to have its own ring system

Earth falls in the habitable Goldilocks zone of our solar system.

All the planets in one picture...via themetapicture #Illustration #PlanetsThis is AWESOME!

Planets in the habitable zone that are too large to have terrestrial surfaces may have smaller moons that could be Earth-like.

This artist's concept illustrates the preferred model for explaining ALMA observations of Beta Pictoris. At the outer fringes of the system, the gravitational influence of a hypothetical giant planet (bottom left) captures comets into a dense, massive swarm (right) where frequent collisions occur.