Live data from Hacker News

NASA to announce 'intriguing planetary system' discovery on Thursday

nasa.gov

11–20 of 37 posts

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#11

I'm quoting a person who works on that project: "They discovered a huge number of Earth-like planets. The new count is vastly outnumbers previous estimations even over the gas giants due to imperfect technology." The remaining conclusions are up to you, even if they are not going to be voiced at the conference....

Depends on the definition of "Earth-like", really. Mars is Earth-like in some astronomical contexts.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#12

I'm quoting a person who works on that project: "They discovered a huge number of Earth-like planets. The new count is vastly outnumbers previous estimations even over the gas giants due to imperfect technology." The remaining conclusions are up to you, even if they are not going to be voiced at the conference....

The reason I found it interesting was that the news about 'hundreds' of Earth-like planets (using a very ballpark description of 'Earth-like,' of course) filtered out back in June in the usual fairly low-key fashion.

This announcement refers to a 'new discovery about an intriguing planetary system' - in other ones, just one solar system out of the hundreds of possible candidates. Maybe it's nothing more than extreme cleverness being used to confirm one of them has 3 or more planets (which would be significant in itself), but I sense a mystery - either something we'd never seriously considered before (like planets with overlapping orbits?) or else something that looks unexpectedly familiar.

Most exciting of all would be confirmation by some other observation platform of something interesting at a particular location - the plan is to work with other observatories to take a more detailed look at interesting candidates (see http://www.nasa.gov/mission_pages/kepler/news/keplerm-201005...). Small hope of that right now, though.

If you want to study the date yourself, it's available via http://archive.stsci.edu/ and http://nsted.ipac.caltech.edu/; http://nexsci.caltech.edu/workshop/2010/speaker_talks/Plavch... gives a quick rundown on what you need to know in order to work with it.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#13

I'm quoting a person who works on that project: "They discovered a huge number of Earth-like planets. The new count is vastly outnumbers previous estimations even over the gas giants due to imperfect technology." The remaining conclusions are up to you, even if they are not going to be voiced at the conference....

Depends on the definition of "Earth-like", really. Mars is Earth-like in some astronomical contexts.

Well, if you have the resources to get from here to a Mars-like planet, turning it into a habitable world should be trivial, so Mars is Earth-like enough for colonization purposes at least.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#14
post #9

I'm quoting a person who works on that project: "They discovered a huge number of Earth-like planets. The new count is vastly outnumbers previous estimations even over the gas giants due to imperfect technology." The remaining conclusions are up to you, even if they are not going to be voiced at the conference....

Looks quite likely. They started collecting data in June 2009 and expected that a year of observations will be necessary to confirm a big number of planets. What are your conclusions? We are not alone? There are places for humankind to expand to?

As far as I have been able to tell when looking a couple of weeks back the data they are mainly using for ground based confirmations is the stuff from the first few months. There seems to be quiet a big lag time between recording the data and actually getting it out for confirmations which themselves would be taking quiet some time.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#15

I'm quoting a person who works on that project: "They discovered a huge number of Earth-like planets. The new count is vastly outnumbers previous estimations even over the gas giants due to imperfect technology." The remaining conclusions are up to you, even if they are not going to be voiced at the conference....

Depends on the definition of "Earth-like", really. Mars is Earth-like in some astronomical contexts.

Venus is also Earth-like in the sense we're talking about here, despite being almoet a thousand degrees Fahrenheit hotter.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#16
post #7
post #5

Earlier quoted context omitted.

It does make me wonder to consider what NASA finds intriguing. Exciting would be a green planet of the right size orbiting the right distance from it's sun. What could fall into intriguing but not exciting to people that for most intents and purposes have seen it all?

Yeah, I want to know as well. I've read a little on the tech they use. Sounds pretty cool, but could some of these planets be false positives? They said they found a planetary system so I can only assume. Would be neat if they found a planet similar to ours.

They have a list of false positives thus far, most of which are binary stars which eclipse each other as viewed from earth.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#17
post #5

Earlier quoted context omitted.

It does make me wonder to consider what NASA finds intriguing. Exciting would be a green planet of the right size orbiting the right distance from it's sun. What could fall into intriguing but not exciting to people that for most intents and purposes have seen it all?

I would be excited by a blue planet; a green planet (assuming that's shorthand for large masses of chlorophyll == extraterrestrial life) would probably be the most important announcement ever made.

From what I understand of the technology it isn't possible for us to detect this right now.

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#19

I'm quoting a person who works on that project: "They discovered a huge number of Earth-like planets. The new count is vastly outnumbers previous estimations even over the gas giants due to imperfect technology." The remaining conclusions are up to you, even if they are not going to be voiced at the conference....

The reason I found it interesting was that the news about 'hundreds' of Earth-like planets (using a very ballpark description of 'Earth-like,' of course) filtered out back in June in the usual fairly low-key fashion. This announcement refers to a 'new discovery about an intriguing planetary system' - in other ones, just one solar system out of the hundreds of possible candidates. Maybe it's nothing more than extreme…

Overlapping orbits would be interesting. They would have to be equal size planets and directly opposite (my mind isnt alert enough to consider 3D right now) the star so as not to collide nor alter the other planet's orbit right?

Re: NASA to announce 'intriguing planetary system' discovery on Thursday

#20
post #18

Perhaps it will be related to this? http://www.nature.com/nmeth/journal/v6/n7/full/nmeth0709-487... EDIT: original PNAS article http://www.pnas.org/content/106/19/7816

I'd be surprised, but happily we have options for making such tests via Hubble and others, so if not now, then maybe later.

BTW if you haven't seen it, you'll probably enjoy this (small pdf): http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.43....

Post reply on HN