Kepler Mission |
Kepler Mission |
Sep 24 2005, 04:23 PM
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Member Group: Members Posts: 147 Joined: 3-July 04 From: Chicago, IL Member No.: 91 |
This NASA Discovery mission is to be launched in June 2008 and will search for Earth-size and smaller planets. Launch was originally scheduled in 2007 but delayed by 8 months due to "funding constraints".
Here's the official web site: http://www.kepler.arc.nasa.gov/ |
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Guest_PhilCo126_* |
Mar 10 2009, 06:33 PM
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#2
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Guests |
Talking about mission life time; there was already talk of a possible extension to six years, which would allow improved observations of more transits to detect smaller planets and of course finding planets in larger period orbits
Meanwhile: http://www.astronomynow.com/090310KeckandK...joinforces.html |
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Mar 10 2009, 10:39 PM
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#3
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Member Group: Members Posts: 237 Joined: 22-December 07 From: Alice Springs, N.T. Australia Member No.: 3989 |
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Mar 10 2009, 10:46 PM
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#4
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Senior Member Group: Members Posts: 1453 Joined: 26-July 08 Member No.: 4270 |
Ref the article: Interesting!!! Especially ..... "Furthermore, Marcy and his team can use the Keck-calculated mass and Kepler-calculated diameter to determine the planet's density". (My bolding) I am unsure why you bring attention to this. Density = mass / volume, with the mass and volume of a planet, we can calculate its density fairly easily. The density of transiting planets is not unmeasured. To name a few examples: HD 209458 b -> ~ 0.41 g cm^-3. HD 149026 b -> ~ 0.82 g cm^-3. HAT-P-2 b -> ~11.9 g cm^-3. HD 189733 b -> ~ 1.06 g cm^-3. TrES-3 b -> ~ 0.99 g cm^-3. And so on... -------------------- -- Hungry4info (Sirius_Alpha)
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