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    1. ( Harvard-Smithsonian Center for Astrophysics ) A star in the constellation Cassiopeia has a planet in a three-day orbit that transits, or crosses in front of its star. At a distance of just 21 light-years, it is by far the closest transiting planet to Earth, which makes it ideal for follow-up studies. Moreover, it is the nearest rocky planet confirmed outside our solar system.

    2. Nearest rocky planet outside solar system confirmed

      CBC via Yahoo Canada NewsJul 30 12:31 PM

      "Most of the known planets are hundreds of light-years away. This one is practically a next-door neighbour," said Lars A. Buchhave, an astronomer at the Harvard-Smithsonian Center for Astrophysics, in a statement today. Buchhave is the co-author of a paper about the planet accepted for publication in the journal Astronomy & Astrophysics.

    3. Pluto and its largest moon, Charon, orbit each other in a way that is similar to binary star systems, or two stars that orbit close together. "In terms of the dynamics of how planets form around binary star systems, Pluto is the closest example we have," Scott Kenyon, a theoretical astrophysicist at the Harvard- Smithsonian Center for Astrophysics (CfA), told Space.com. When young Luke Skywalker...

    4. How you can see the star HD219134, announced last week to have the nearest rocky exoplanet. Plus ... the star's proper motion, captured by an amateur astronomer.

    5. Closest Rocky Alien Planet Discovered

      SPACE.com via Yahoo! NewsJul 31 03:00 AM

      Astronomers have discovered a rocky exoplanet that lies just 21 light-years from Earth — closer than any other confirmed rocky alien world. The alien planet, called HD 219134b, is about 4.5 times more massive than Earth, making it a so-called "super Earth," a new study reports. HD 219134b lies extremely close to its host star, completing one orbit every three days, so its surface is too hot to ...

    6. Astronomers have confirmed the discovery of the nearest rocky planet outside of our solar system.

    7. This artist's rendition shows one possible appearance for the planet HD 219134b, the nearest confirmed rocky exoplanet found to date outside our solar system. Image courtesy NASA/JPL-Caltech .

    8. Washington, Jul 31 (IANS): Astronomers using a NASA telescope have confirmed the discovery of the nearest rocky planet outside our solar system which is larger than Earth and a potential gold mine of science data.

    9. On Tuesday, NASA released photos of a stellar event that no one would know about if it weren’t for Penn State. Click to Continue »

    10. How far we've come. Thirty years ago, astronomers theorized that planets could orbit other stars in our galaxy. Today, we know of more than 1,800 exoplanets.

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