Exoplanet Discoveries - Unmanned Spaceflight.com

Exoplanet Discoveries, discussion of the latest finds

Guest_PhilCo126_*	Apr 21 2009, 11:10 AM Post #1
Guests	Well-known exoplanet researcher Dr Michel Mayor ( discoverer of Peg 51b with Dr Didier Queloz in 1995 ) today announced the discovery of the lightest exoplanet found so far. The planet, “e”, in the famous system Gliese 581, is only about twice the mass of our Earth. The team also refined the orbit of the planet Gliese 581 d, first discovered in 2007, placing it well within the habitable zone, where liquid water oceans could exist: http://www.eso.org/public/outreach/press-r...9/pr-15-09.html

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ngunn View Member Profile	Feb 23 2017, 11:33 PM Post #2
Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542	Brilliant stuff guys, thanks for taking an interest in a casual question. It has set me off thnking though about the invariable plane of the solar system. All the planetary orbits must eventually relate to that as they evolve over time but I can't find it plotted on a star map as the ecliptic and galactic equator commonly are. Can anybody help?

Posts in this topic

PhilCo126 Exoplanet Discoveries Apr 21 2009, 11:10 AM

belleraphon1 32 New Exoplanets Found - 10/19/09 ESO release ... Oct 19 2009, 01:32 PM

Julius How can they be so sure that the super earths dete... Oct 20 2009, 11:10 AM

qraal QUOTE (Julius @ Oct 20 2009, 10:10 PM) Ho... Oct 20 2009, 11:27 AM

Greg Hullender There's a branch of mathematics called "F... Oct 20 2009, 07:47 PM

tfisher QUOTE (Greg Hullender @ Oct 20 2009, 02:4... Oct 22 2009, 12:30 AM

Greg Hullender QUOTE (tfisher @ Oct 21 2009, 05:30 PM) I... Oct 22 2009, 02:26 AM

Hungry4info QUOTE (Greg Hullender @ Oct 21 2009, 08:2... Oct 22 2009, 12:33 PM

Greg Hullender QUOTE (Hungry4info @ Oct 22 2009, 04:33 A... Oct 22 2009, 05:31 PM

imipak 'Spherical cow' now has it's very own ... Oct 23 2009, 06:47 PM

PhilCo126 Team of Astronomers using Japanese Subaru Telescop... Dec 5 2009, 05:47 PM

Hungry4info I'm quite unsure as to why this is being made ... Dec 6 2009, 04:00 AM

centsworth_II QUOTE (Hungry4info @ Dec 5 2009, 11:00 PM... Dec 6 2009, 07:15 AM

ngunn On a different topic, I've not noticed discuss... Dec 6 2009, 11:57 AM

Hungry4info QUOTE ("centsworth_II")Isn't this ju... Dec 6 2009, 02:26 PM

ngunn Yes I noticed the range of hypotheses offered, but... Dec 6 2009, 04:57 PM

Hungry4info Of course it's more exciting, but only in the ... Dec 6 2009, 05:07 PM

ngunn QUOTE (Hungry4info @ Dec 6 2009, 05:07 PM... Dec 6 2009, 09:28 PM

scalbers I guess we can mention GJ1214b and the MEarth proj... Jan 1 2010, 06:06 PM

PhilCo126 Keck telescopes on Mauna Kea - Hawaii discovered 2... Jan 9 2010, 09:59 AM

Mongo I will charitably assume that the reporters left o... Jan 9 2010, 02:57 PM

belleraphon1 Agreed Mongo... Go to Extrsolar Planets Encyclope... Jan 9 2010, 08:06 PM

ngunn There is nothing like new data for shaking things ... Apr 14 2010, 10:59 AM

Ron Hobbs The VLT has taken pictures of a planet orbiting be... Jun 11 2010, 06:40 PM

remcook Doing observations from the ground can have its ad... Jun 24 2010, 08:06 AM

Drkskywxlt Confirmation of the first directly imaged planet a... Jun 30 2010, 05:42 PM

ustrax It's extragalactastic! http://www.eso.org... Nov 18 2010, 07:55 PM

ustrax 500! and 2... Wow! And to think that we j... Nov 19 2010, 11:09 PM

remcook Well, finally that mysterious DPS presentation got... Dec 2 2010, 09:14 AM

ngunn Free floating planets found by microlensing: http:... May 19 2011, 04:14 PM

TheAnt Some years ago we were given the impression that q... Jun 19 2016, 09:49 AM

Explorer1 A Proxima Centauri planet!? http://phys.org... Aug 13 2016, 06:58 AM

Gerald Seems, they found a hint to a small deviation of P... Aug 13 2016, 07:46 AM

HSchirmer Just noticed that Der Spiegel and other online sou... Aug 14 2016, 01:30 AM

JRehling Google searches limited to the last week show seve... Aug 14 2016, 02:32 AM

nprev MOD MODE: Merged topic created for this alleged Pr... Aug 14 2016, 07:41 AM

JRehling This is indeed a good time to invoke Sagan's L... Aug 14 2016, 03:01 PM

Explorer1 Presumably they wouldn't have published the ar... Aug 14 2016, 04:18 PM

Gerald Pale Red Dot has submitted a paper for peer review... Aug 14 2016, 11:12 PM

nprev Thanks, Gerald. That's the kind of clarifying ... Aug 14 2016, 11:35 PM

alphasam I'll just leave this here From BBC The Sky a... Aug 18 2016, 07:09 PM

JRehling Der Spiegel has published a new article that almos... Aug 19 2016, 06:23 PM

alphasam There will be a press conference at ESO headquarte... Aug 22 2016, 02:14 PM

TheAnt Hmm, if Der Spiegel is to believed, it is now clai... Aug 23 2016, 06:26 PM

Gerald ESO on twitter: QUOTE Dear friends we will be maki... Aug 24 2016, 11:46 AM

alphasam Yeah, there is a conference with the press going o... Aug 24 2016, 11:52 AM

DEChengst ESOcast 87: Pale Red Dot Results: https://www.eso... Aug 24 2016, 05:04 PM

TheAnt Here we got the full facts, a 'year' lasti... Aug 24 2016, 05:15 PM

Gladstoner FYI, Centauri Dreams is a good resource for exopla... Aug 24 2016, 07:49 PM

JRehling This work contains, also, an interesting hint of t... Aug 25 2016, 12:59 AM

Mongo Exploring plausible formation scenarios for the pl... Aug 25 2016, 01:46 AM

JRehling An important result, discussed in more detail in t... Aug 25 2016, 04:08 AM

Mongo Tutorial models of the climate and habitability of... Aug 26 2016, 12:26 AM

Mongo Prospects for Characterizing the Atmosphere of Pro... Aug 29 2016, 01:33 AM

Holder of the Two Leashes QUOTE (Mongo @ Aug 28 2016, 07:33 PM) ...... Aug 29 2016, 05:53 PM

JRehling I think JWST will be able to study planets in the ... Aug 30 2016, 06:34 PM

katodomo As an overall strategy, JWST is more of an interme... Aug 31 2016, 06:21 PM

ZLD Not getting my hopes up for TMT anymore. While onl... Sep 1 2016, 02:18 AM

Mongo This one is interesting, it considers what can be ... Sep 13 2016, 01:10 AM

Explorer1 Press conference tomorrow on a new discovery, expe... Feb 21 2017, 08:03 PM

nprev Reminder to all: We do not discuss embargoed infor... Feb 22 2017, 01:50 AM

hendric https://www.nasa.gov/press-release/nasa-tel...-pla... Feb 22 2017, 06:16 PM

HSchirmer QUOTE (hendric @ Feb 22 2017, 06:16 PM) h... Feb 22 2017, 06:57 PM

JRehling This is quite an interesting and – IMO – surprisin... Feb 22 2017, 08:06 PM

ngunn QUOTE (JRehling @ Feb 22 2017, 08:06 PM) ... Feb 22 2017, 09:03 PM

JRehling QUOTE (ngunn @ Feb 22 2017, 02:03 PM) Ano... Feb 22 2017, 09:36 PM

ngunn QUOTE (JRehling @ Feb 22 2017, 09:36 PM) ... Feb 22 2017, 10:52 PM

JRehling QUOTE (ngunn @ Feb 22 2017, 03:52 PM) So ... Feb 23 2017, 05:41 AM

TheAnt QUOTE (JRehling @ Feb 23 2017, 06:41 AM) ... Feb 23 2017, 12:41 PM

hendric QUOTE (JRehling @ Feb 22 2017, 11:41 PM) ... Feb 23 2017, 05:24 PM

JRehling The big reason why it is much easier to determine ... Feb 23 2017, 06:15 PM

fredk QUOTE (JRehling @ Feb 22 2017, 10:36 PM) ... Feb 23 2017, 07:23 PM

nprev ADMIN NOTE: All TRAPPIST-1 posts have been moved h... Feb 23 2017, 05:54 AM

ngunn When will we know we have fathomed the'norms o... Feb 23 2017, 07:38 PM

hendric If I am reading the Simbad entry correct for Trapp... Feb 23 2017, 08:27 PM

fredk Looks good, Hendric. (But that's 23' from... Feb 23 2017, 09:33 PM

ngunn Brilliant stuff guys, thanks for taking an interes... Feb 23 2017, 11:33 PM

Explorer1 QUOTE It's possible to resolve this, eventuall... Feb 24 2017, 12:33 AM

JRehling QUOTE (Explorer1 @ Feb 23 2017, 05:33 PM)... Feb 24 2017, 02:38 AM

TheAnt QUOTE (JRehling @ Feb 24 2017, 03:38 AM) ... Feb 24 2017, 08:17 AM

JRehling QUOTE (TheAnt @ Feb 24 2017, 01:17 AM) Ye... Feb 25 2017, 10:45 PM

Julius [quote name='JRehling' date='Feb 25 20... Feb 26 2017, 08:10 PM

JRehling I can only say "Suppose that tidal locking me... Feb 26 2017, 10:23 PM

hendric In a related Nova episode on the Origami Revolutio... Feb 24 2017, 05:33 PM

scalbers For visually resolving I remain a fan of the old P... Feb 25 2017, 12:47 AM

ZLD QUOTE (scalbers @ Feb 24 2017, 06:47 PM) ... Feb 26 2017, 03:00 PM

Hungry4info The default assumption is the slower rotation peri... Feb 26 2017, 08:44 PM

fredk Well, for these new planets their orbital periods ... Feb 26 2017, 09:30 PM

ngunn I also wondered the same thing, and noted that all... Feb 26 2017, 10:13 PM

Explorer1 If 59 day rotation is fast enough to get a magneti... Feb 27 2017, 05:17 AM

Mongo Towards Detection of Exoplanetary Rings Via Transi... Feb 28 2017, 08:21 PM

Explorer1 Very cool; reminds me of J1407 ( https://en.wikipe... Mar 1 2017, 12:17 AM

marsbug Somehow I'd mised that - a ring system with th... Mar 8 2017, 02:47 AM

TheAnt Of minor importance perhaps, yet more observations... Mar 19 2017, 01:29 PM

Mongo A revolution is brewing: observations of TRAPPIST-... Apr 3 2017, 01:25 AM

JRehling QUOTE (Mongo @ Apr 2 2017, 06:25 PM) Plea... Apr 3 2017, 01:51 AM

Ron Hobbs And did you notice this was published in the ... Apr 3 2017, 02:50 AM

JRehling After that April Fools joke… here's an actual ... Apr 13 2017, 05:47 AM

tanjent " it’s roughly Earth-sized, and has slightly ... Apr 13 2017, 02:55 PM

scalbers I wonder what the limits of this technique are wit... Apr 13 2017, 04:26 PM

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