Natalie bill jill_collated_05_dec11_final
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Transcript of Natalie bill jill_collated_05_dec11_final
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Pete Worden Center Director, Ames Research Center
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Natalie Batalha Kepler Deputy Science Team Lead, San Jose State University
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What fraction of stars in our galaxy harbor potentially habitable, Earth-size planets?
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Planet Candidates as of June 2010
Orbital Period in days
Siz
e R
elat
ive
to E
arth
Jun 2010
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Planet Candidates as of Feb 2011
Orbital Period in days
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011
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Planet Candidates as of Dec 2011
Orbital Period in days
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
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Sizes of Planet Candidates
207
680
1181
203 27 (+204%)
(+136%)
(+78%)
(+23%)
(+42%)
Earth-size −
Super Earth-size −
− Neptune-size
− Jupiter-size − Super Jupiter-size
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Candidates in the Habitable Zone
Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
223K - 373K
Dec: 139
Feb: 54
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Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
185K - 303K
Dec: 48
Feb: 25
Candidates in the Habitable Zone
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Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
Ten Near-Earth-Size Candidates in the Habitable Zone (185-303 K)
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Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
Ten Near-Earth-Size Candidates in the Habitable Zone (185-303 K)
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William Borucki Kepler Principal Investigator at Ames
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Data Confirmation
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Data Confirmation
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Composition Dependence on the Radius and Mass of a Planet
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First Confirmed Kepler Planet In the Habitable Zone
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When Is an Earth-Analog"Really an Earth-Analog?
Jill Tarter, Director, Center for SETI Research
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The Allen Telescope Array
ATA-42
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Shasta
Lassen
Allen Telescope Array
Hat Creek Radio Observatory
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3He+
NO
ISE
ME
AS
UR
ED
IN
DE
GR
EE
S K
ELV
IN
FREQUENCY IN GHz
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Hydrogen 3Helium+
f0 = 1420 MHz λ0 = 21 cm
f0 = 8666 MHz λ0 = 3.46 cm
Hyperfine Spin-Flip Transition
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Voyager 1 Signal from 106 AU Away
Frequency
Tim
e
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Last Month Looking at Mars
Frequency
Tim
e
MRO
Mars Express
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