Kepler Mission |
Kepler Mission |
Jul 26 2010, 07:34 PM
Post
#586
|
|
Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
I've posted elsewhere - these are 'Earth-like' planets, in the same way a cow is 'Car-like'
|
|
|
Jul 26 2010, 07:39 PM
Post
#587
|
|
Member Group: Members Posts: 293 Joined: 29-August 06 From: Columbia, MD Member No.: 1083 |
Well, this leak story has even reached Science:
http://news.sciencemag.org/scienceinsider/...h-in-earth.html Although the planets that Sasselov presented ARE candidates and he said that in his presentation, many people are reading into the very confident, affirmative way he said that "there are Earth-like planets" in the data. His chart also says ~1160 planet candidates, which is a big boost from the 706 stars with candidates announced in June. But, the other chart says 700. So, whose to know? QUOTE "You can see here [Chart] - small planets dominate the picture. The planets which are marked "like Earth" - definitely more than any of the other planets that we see. Now for the first time we can say that. There is a lot more work we need to do with this. Most of these are candidates and in the next few years - we will confirm them - but the statistical result is loud and clear - and the statistical result is that planets like our own Earth are out there." So, although most of these are probably baking-hot corona-grazers, Sasselov seems to be hinting that some are in the HZ. |
|
|
Jul 26 2010, 08:35 PM
Post
#588
|
|
Senior Member Group: Members Posts: 1417 Joined: 26-July 08 Member No.: 4270 |
The ~1160 planets is the 700 Kepler candidates plus the ~460 already known from various non-Kepler surveys.
-------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
Jul 26 2010, 08:39 PM
Post
#589
|
|
Member Group: Members Posts: 293 Joined: 29-August 06 From: Columbia, MD Member No.: 1083 |
Ah, got it. That makes much more sense, thanks.
|
|
|
Jul 26 2010, 10:17 PM
Post
#590
|
|
Junior Member Group: Members Posts: 53 Joined: 1-February 10 Member No.: 5210 |
I'm not too worried about public perception. We don't need the science team backtracking on announcements, since that looks bad and calls the data into question. But if the popular press just misinterprets the data, that's primarily an educational opportunity. True, there will be some lingering confusion. But at the end of the Kepler extended mission, we'll have everything wrapped up in a nice digestible package that can get boilerplated into the textbooks and amateur websites.
|
|
|
Jul 26 2010, 10:54 PM
Post
#591
|
|
Senior Member Group: Members Posts: 1417 Joined: 26-July 08 Member No.: 4270 |
Well said.
-------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
Jul 26 2010, 11:50 PM
Post
#592
|
|
Member Group: Members Posts: 293 Joined: 29-August 06 From: Columbia, MD Member No.: 1083 |
I recall reading somewhere a mention by a member of the Kepler team that they intend to submit a follow on Discovery proposal for a spectroscopic telescope to characterize planets. Has anyone heard about that or know more?
I suppose we might find out once the Discovery proposals are due in a few months. |
|
|
Jul 27 2010, 01:02 AM
Post
#593
|
|
Senior Member Group: Members Posts: 1417 Joined: 26-July 08 Member No.: 4270 |
It's too early for such a mission. Kepler's planets are spectroscopically inaccessible to even the next generation of telescopes due to their extreme distance, star faintness, etc. Kepler's goal is to quantify ηEarth to aid in the design and planning of the next step, a search for the Earth-like planets among the nearest stars with something like SIM-lite. Those planets will be accessible to direct imaging and spectroscopic characterisation of their atmospheres, in what will be the third step, a TPF/Darwin type mission.
Nearby transiting earths in the habitable zone of their stars like those which may be discovered from the MEarth project may be accessible to telescopes like JWST but only with considerable time and effort (watching many transits to build up a sufficient S/N ratio to characterise their atmospheres). -------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
Jul 27 2010, 01:34 AM
Post
#594
|
|
Senior Member Group: Members Posts: 1018 Joined: 29-November 05 From: Seattle, WA, USA Member No.: 590 |
I hope the Kepler team avoid using "Earth-like" full-stop. That term should be kept until we find a world that truly is "Earth-like", i.e. in terms of size, orbit, and habitability. Considering that a metal-rich star is one with lots of carbon and oxygen, and an ice giant is a planet containing lots of steam, I'm going to suggest they call these "mushroom planets." --Greg :-) |
|
|
Jul 27 2010, 04:01 AM
Post
#595
|
|
Member Group: Members Posts: 131 Joined: 31-May 08 From: San Carlos, California, USA Member No.: 4168 |
I recall reading somewhere a mention by a member of the Kepler team that they intend to submit a follow on Discovery proposal for a spectroscopic telescope to characterize planets. Has anyone heard about that or know more? http://www.unmannedspaceflight.com/index.p...st&p=159109 Basically what you've already said. It was Bill Borucki who said they'd propose a spectroscopy mission. I haven't heard/read anything about it since that time. |
|
|
Jul 27 2010, 04:03 AM
Post
#596
|
|
Senior Member Group: Members Posts: 1018 Joined: 29-November 05 From: Seattle, WA, USA Member No.: 590 |
MSNBC is reporting that NASA will issue some sort of clarification tomorrow.
http://cosmiclog.msnbc.msn.com/_news/2010/...k-causes-a-stir It doesn't say exactly what form that will take, though. --Greg |
|
|
Jul 27 2010, 07:07 AM
Post
#597
|
|
Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
I recall reading somewhere a mention by a member of the Kepler team that they intend to submit a follow on Discovery proposal for a spectroscopic telescope to characterize planets. Has anyone heard about that or know more? I suppose we might find out once the Discovery proposals are due in a few months. I think that is this one: http://thesis.iap.fr/ http://ces.jpl.nasa.gov/documents/thesisWh...er_v7-swain.pdf |
|
|
Jul 27 2010, 05:37 PM
Post
#598
|
|
Member Group: Members Posts: 293 Joined: 29-August 06 From: Columbia, MD Member No.: 1083 |
Thanks, Remcook! That's exactly the type of thing I was looking for. Perhaps the European mission will be competed for the next selection of M or L class missions? It sounds like that type of mission would be tough on a Discovery budget. Maybe NF-class, but astrophysics missions aren't eligible for NF.
|
|
|
Jul 28 2010, 10:17 AM
Post
#599
|
|
Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Sasselov clarifying things:
http://blogs.nasa.gov/cm/newui/blog/viewpo...blogname=kepler -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
|
|
Jul 28 2010, 02:41 PM
Post
#600
|
|
Member Group: Members Posts: 903 Joined: 30-January 05 Member No.: 162 |
Considering that a metal-rich star is one with lots of carbon and oxygen, and an ice giant is a planet containing lots of steam, I'm going to suggest they call these "mushroom planets." --Greg :-) First Eleanor Cameron reference here that I am aware of! Thanx for the memories. Maybe someone on the Kepler team would get some cover art for a little memento . . . . |
|
|
Lo-Fi Version | Time is now: 19th April 2024 - 10:58 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |