Kepler Data Suggest Earth-size Planets May Be Practically Next Door | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

** Airborne 10.29.14 ** HD iPad-Friendly -- Airborne 10.29.14 **
** Airborne 10.27.14 ** HD iPad-Friendly -- Airborne 10.27.14 **
** Airborne/NBAA2014 10.24.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.24.14 **

Mon, Feb 11, 2013

Kepler Data Suggest Earth-size Planets May Be Practically Next Door

Research Shows Nearest Planet Suitable For Liquid Water May Be Just 13 Light-Years Away

Using publicly available data from NASA’s Kepler space telescope, astronomers at the Harvard-Smithsonian Center for Astrophysics (CfA) estimate that six percent of red dwarf stars in the galaxy have Earth-size planets in the "habitable zone," the range of distances from a star where the surface temperature of an orbiting planet might be suitable for liquid water.

The majority of the sun's closest stellar neighbors are red dwarfs. Researchers now believe that an Earth-size planet with a moderate temperature may be just 13 light-years away. "We don't know if life could exist on a planet orbiting a red dwarf, but the findings pique my curiosity and leave me wondering if the cosmic cradles of life are more diverse than we humans have imagined," said Natalie Batalha, Kepler mission scientist, NASA's Ames Research Center in Moffett Field, CA.
 
The research team analyzed 95 planet candidates in the Kepler catalog orbiting 64 red dwarf stars. Most of these candidates aren't the right size or temperature to be considered Earth-like, as defined by the size relative to Earth and the distance from the host star. However, three candidates are both temperate and smaller than twice the size of Earth.
 
Red dwarf stars are smaller, cooler, and fainter than the sun. An average red dwarf is only one-third as large and one-thousandth as bright as the sun. Consequently, the not too hot or not too cold habitable zone would be much closer to a cooler star than it is to the sun. "This close-in habitable zone around cooler stars makes planets more vulnerable to the effects of stellar flares and gravitational interactions, complicating our understanding of their likely habitability,” said Victoria Meadows, professor at the University of Washington and principal investigator with the NASA Astrobiology Institute. "But, if the planets predicted by this study are indeed found very nearby, then it will make it easier for us to make the challenging observations needed to learn more about them, including whether or not they can or do support life."
 
The three planetary candidates highlighted in this study are Kepler Object of Interest (KOI) 1422.02, which is 90 percent the size of Earth in a 20-day orbit; KOI-2626.01, 1.4 times the size of Earth in a 38-day orbit; and KOI-854.01, 1.7 times the size of Earth in a 56-day orbit. Located between 300 to 600 light-years away, the three candidates orbit stars with temperatures ranging from 3,400 to 3,500 degrees Kelvin. By comparison, the temperature of the sun is nearly 5,800 degrees Kelvin.

(Image provided by NASA shows artist's concept of planet in orbit around a Red Dwarf star)

FMI: www.nasa.gov


Advertisement

More News

Airborne 10.29.14: Antares Launch Failure, GAMA Responds, Another 'Roadable'???

Also: Dragon Returns, Quadcopter Flown At Airliner?, Classic Aero-TV: Redhawk, Diesel Flt School Airplanes, WWII Bomber Found The unmanned Antares rocket built by Orbital Science C>[...]

Antares ISS Resupply Mission Suffers Launch Failure

Vehicle Suffers Failure Just Seconds Into Launch Sequence Analysis By ANN Space Correspondent, Wes Oleszewski At approximately 18:22:38.651 Eastern time, the two AJ-26 first stage >[...]

Airborne 10.27.14: New Freefall Altitude Record, NBAA14 Wrap-Up, Falcon AOG

Also: New ALPA Officers, Hurricane Hunters, Aventura AVW, New Runway at Copiah County, LTC Tom Dougherty Flies West Only 2 years ago, Felix Baumgartner set a record for the highest>[...]

Airborne 10.29.14: Antares Launch Failure, GAMA Responds, Another 'Roadable'???

Also: Dragon Returns, Quadcopter Flown At Airliner?, Classic Aero-TV: Redhawk, Diesel Flt School Airplanes, WWII Bomber Found The unmanned Antares rocket built by Orbital Science C>[...]

U.K. Ministry Of Defense Makes $2.42 Billion Air Traffic Management Deal

Contract Awarded To Joint Venture Between Thales And NATS AQUILA, a joint venture between Thales and NATS, has been awarded the £1.5 billion (approx. $2.42 billion) contract,>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2014 Web Development & Design by Pauli Systems, LC