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Distant planets

A planet remarkably similar to Earth has been discovered in a "habitable zone" around a distant sun-like star.

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Distant planets

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  1. Distant planets

  2. An illustration compares Earth (L) to a planet beyond the solar system that is a close match to Earth, called Kepler-452b. The planet, which is about 60 percent bigger than Earth, is located about 1,400 light years away in the constellation Cygnus. REUTERS/NASA/Ames/JPL-Caltech/T. Pyle

  3. Kepler-186f is seen in a NASA artist's concept released April 17, 2014. The planet is the first validated Earth-size planet to orbit a distant star in the habitable zone which is a range of distance from a star where liquid water might pool on the planet's surface.

  4. A newly discovered planet-like object, dubbed "Sedna" is seen in this artist's concept released by NASA March 26, 2014. Astronomers have found a small icy body far beyond Pluto and the Kuiper Belt, a discovery that calls into question exactly what was going on during the early days of the solar system. REUTERS/NASA/JPL-Caltech/Handout via Reuters

  5. Dwarf planet Ceres is seen in the main asteroid belt between the orbits of Mars and Jupiter. Ceres, one of the most intriguing objects in the solar system, is gushing water vapor from its frigid surface into space, in a finding that raises questions about whether it might be hospitable to life. REUTERS/NASA/ESA

  6. An artist's impression shows a sunset seen from the super-Earth Gliese 667 Cc. Astronomers have estimated there are tens of billions of such rocky worlds orbiting faint red dwarf stars in the Milky Way alone. REUTERS/ESO/L. Calcada

  7. A view of a Saturn-sized planet orbiting 79 Ceti. REUTERS/Stringer

  8. An artist's depiction of Kepler-62e. The super Earth-size planet is in the habitable zone of a star smaller and cooler than the sun, located about 1,200 light-years from Earth in the constellation Lyra. REUTERS/NASA Ames/JPL-Caltech

  9. An icy planet-forming disk around a young star called TW Hydrae, located about 175 light-years away in the Hydra, or Sea Serpent, constellation. REUTERS/NASA/JPL-Caltech

  10. Kepler-22b, the most Earth-like planet ever discovered, is circling a star 600 light years away. It is the smallest and the best positioned to have liquid water on its surface - among the ingredients necessary for life on Earth. REUTERS/NASA/Ames/JPL-Caltech

  11. A newly discovered planet, designated by the unglamorous identifier of OGLE-2005-BLG-390Lb, orbits a red star five times less massive than the Sun and located at a distance of about 20,000 light years. REUTERS/ESO

  12. An artist's impression shows the planet orbiting the star Alpha Centauri B, a member of the triple star system that is the closest to Earth. Our own Sun is visible to the upper right. REUTERS/ESO

  13. The Jupiter-size extrasolar planet, HD 189733b, being eclipsed by its parent star. The planet is a 'hot Jupiter', so close to its parent star that it completes an orbit in only 2.2 days. REUTERS/ESA/NASA/M. Kornmesser (ESA/Hubble)/STScI.

  14. An artist's conception of the tiny new planet Kepler-37b, which is slightly larger than Earth's moon and orbits its host star every 13 days. It likely has a surface temperature of in excess of 400C (700F). Astronomers don't think the tiny planet has an atmosphere or could support life as we know it, but the moon-size world is almost certainly rocky in composition. REUTERS/NASA/Ames/JPL-Caltech

  15. An artist's impression of the planet 55 Cancri e orbiting its sun in the constellation of Cancer. The rocky planet, made largely out of diamond, moves so fast that a year there lasts a mere 18 hours. REUTERS/NASA/JPL-Caltech

  16. Kepler-11, a sun-like star around which six planets orbit. At times, two or more planets pass in front of the star at once, as shown in a simultaneous transit of three planets. REUTERS/Tim Pyle/NASA

  17. A hot, rocky, geologically active planet glowing in the deep red light of its nearby parent star, the M dwarf Gliese 876.

  18. The first visible-light snapshot of a planet circling another star. Estimated to be no more than three times Jupiter's mass, the planet, called Fomalhaut b, orbits the bright southern star Fomalhaut, located 25 light-years away in the constellation Piscis Australis, or the "Southern Fish." REUTERS/NASA, ESA

  19. A baffling planet, known as HAT-P-1, that is much larger than theory predicts. The planet has a radius about 1.38 times Jupiter's but contains only half Jupiter's mass. REUTERS/David A. Aguilar

  20. A rich starry sky fills the view from an ancient gas-giant planet in the core of the globular star cluster M4. The 13-billion-year-old planet orbits a helium white-dwarf star and the millisecond pulsar B1620-26, seen at lower left.

  21. The circumbinary planet Kepler-16b - the first planet known to definitively orbit two stars. The cold planet, with its gaseous surface, is not thought to be habitable. The largest of the two stars, a K dwarf, is about 69 percent the mass of our sun, and the smallest, a red dwarf, is about 20 percent the sun's mass. These star pairs are called eclipsing binaries. REUTERS/NASA/JPL-Caltech/T. Pyle/Handout

  22. Planet 2003UB313, the most distant object ever detected orbiting the sun, at the lonely outer fringes of our solar system. Our sun can be seen in the distance. The planet is at least as big as Pluto and about three times farther away from the Sun than Pluto. REUTERS/NASA/JPL-Caltech

  23. A Jupiter-sized planet passing in front of its parent star. Such events are called transits. When the planet transits the star, the star's apparent brightness drops by a few percent for a short period. REUTERS/NASA/ESA/G. Bacon

  24. An exoplanet 6 times the size of Earth circulating around its low-mass host star at a distance equal to 1/20th of the Earth-Sun distance. The host star is a companion to two other low-mass stars, which are seen here in the distance (L). REUTERS/ESO/L. Calcada

  25. The planet Kepler-16b with its two stars. The cold planet, with its gaseous surface, is not thought to be habitable. The largest of the two stars, a K dwarf, is about 69 percent the mass of our sun, and the smallest, a red dwarf, is about 20 percent the sun's mass. REUTERS/NASA/JPL-Caltech/R. Hurt

  26. A unique type of exoplanet discovered with the Hubble Space Telescope. The planet is so close it to its star that it completes an orbit in 10.5 hours. The planet is only 750,000 miles from the star, or 1/130th the distance between Earth and the Sun. REUTERS/NASA/ESA/A. Schaller

  27. A fledgling solar system containing deep within it enough water vapor to fill all the oceans on Earth five times, located in our Milky Way galaxy about 1,000 light years from Earth in the constellation Perseus. REUTERS/NASA/JPL-Caltech

  28. The first photograph of a planet beyond our solar system, released by the University of Jena and the European Space Observatory April 5, 2005. The planet, orbiting a star similiar to our young Sun known as GQ Lupi, is thought to be one to two times as massive as Jupiter. REUTERS/Uni Jena/ESO

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