Extra-Galactic Planet Discovered In Milky Way
astroengine writes "Between six to nine billion years ago, the Milky Way collided with another galaxy. As you'd expect, this caused quite a mess; stars, dust and gas being ripped from the intergalactic interloper. In fact, to this day, the dust hasn't quite settled and astronomers have spotted an odd-looking exoplanet orbiting a metal-poor star 2,000 light-years from Earth. Through a careful process of elimination, the extrasolar planet (known as HIP 13044b) actually works out to be an extragalactic planet, a surviving relic of the massive collision eons ago."
How old in the galaxy again, I get confused.
Fornax was identified by Nicolas Louis de Lacaille in 1756. He originally called it Fornax Chemica ("chemical furnace"), representing a small solid fuel heater used for heating chemical experiments.
There are 40 unknown "dwarf" galaxies in this constellation and has ultra compact dwarfs are much smaller than previously known dwarf galaxies, about 120 light-years across
NGC 1316 is a notably bright elliptical galaxy within the Fornax Cluster. The galaxy is also one of the brightest radio sources in the sky.
UDFy-38135539, a galaxy which was identified as the most distant object in the universe from Earth as of October 2010, is located in Fornax. It was detected using the Hubble UDF image.
He who knows best knows how little he knows. - Thomas Jefferson
Another dimension do it
Am I part of the core demographic for Swedish Fish?
I'm a bit skeptical too. It orbits around an extragalactic that shouldn't be able to form planets, and it's now part of our galaxy because its original galaxy collided with ours. What I'd like to know is: why are they so certain the planet can't have been captured by this extragalactic star during that collision? I mean, wouldn't that be the most obvious conclusion here?
I've got the paper in front of me and statistically, you've got more chance of not being a douchebag than this does of being a rounding error. I mean that quantitatively: they calculated the chances of this being a false alarm at 5.5 × 10^-6, which sounds like pretty much the same chance as you being a reasonable human being.
No kidding!!! What do you say at this point?
Agreed! My first though after reading TFA was if the home star of the planet doesn't have the heavy elements you would expect to find in the star or a planet system then could the planet have been picked up at some point? Could the tidal forces of a galactic merger pull a planet free from it's parent star? If so, could the gravity of another star capture the free planet?
It obviously doesn't belong here. Someone needs to find the galaxy that this planet belongs to and send it back.
Alex, I'll take keybindings not used by Emacs for $400....
They actually address that hypothesis:
Finally, as a member of the Helmi stream, HIP 13044 most
probably has an extragalactic origin. This implies that its
history is likely different from those of the majority of known
planet-hosting stars. HIP 13044 was probably attracted to the
Milky Way several Ga ago. Before that, it could have had
belonged to a satellite galaxy of the Milky Way similar to
Fornax or the Sagittarius dwarf spheroidal galaxy (14).
Because of the long galactic relaxation timescale, it is
extremely unlikely that HIP 13044 b joined its host star
through exchange with some Milky Way star, after the former
had been tidally stripped. The planet HIP 13044 b could thus
have a non-Galactic origin.
No kidding!!! What do you say at this point?
The star is part of a group widely accepted to have an extragalactic origin due to their orbit.
No kidding!!! What do you say at this point?
When I first read the headlines elsewhere, I wondered how we could have advanced sensitivity by a few orders of magnitude to distinguish individual stars in another galaxy, nevermind planets. Slashdot's headline is nonsensical. I find it kind of hard to think of a star that's "in the Milky Way galaxy" as being extragalactic. I'll even trust that the astronomers' science is right on: they're able to detect if a star matches indicators for originating in this galaxy or that galaxy. Maybe it used to be a part of a different galaxy pre-collision, but I would say it's in this galaxy now, so it's not an extragalactic star system. This article itself occasionally uses the phrase "of extragalactic origin" and I'm okay with that, but simplifying it further actually makes it more confusing.
[
Data: There's a planet orbiting a metal-poor star. ....wait what?
Conclusion: IT COMES FROM OUTSIDE OUR GALAXY.
Datum 1: The star comes from the Helmi Stream, a well understood remnant of a dwarf galaxy consumed by our own.
Datum 2: You've been modded insightful.
Conclusion 1: Neither you, nor the mod, read TFA.
Datum 3: TFA doesn't even mention this.
Conclusion 2: I hadn't read TFA either.
Recommendation: Read http://blogs.discovermagazine.com/badastronomy/2010/11/18/exoplanet-found-from-another-galaxy/#more-24148 for a much better explanation.
"I zero-index my hamsters" - Willtor (147206)
If the planet is extragalactic, how was it discovered in the Milky Way galaxy ?
You see, the discovery was made in the Milky Way, as opposed to Andromeda. People often get confused.
"Hip 13044b" is a waste of a perfectly good excuse to name it Eddore.
OK, so its extra-galactic rather than extra-dimensional, but that's the closest we're likely to get, and Doc Smith had colliding galaxies, too.
In a survey of 100 programmers, 111111 thought that duck-typing was a good idea.
Because it's in the Milky Way. Extra- in this instance means "another" i.e. from another galaxy, not "in another galaxy". Similar to "extraterrestrial" - they don't stop being extraterrestrials when they arrive on Earth.
I think Exogalactic would be the term if it was still in another galaxy but I might be wrong.
Brain surgery - it's not rocket science!
Yeah that's a much better link. Would mod up if I had the points.
Why don't we just call it an "immigrant" star, then? Since this is the first time we're hearing of it, and it's billions of years old, it's probably here illegally^W^W undocumented. I suggest we give it full social security and Medicaid entitlements, plus in-galaxy tuition at the college of its choice.
Gamingmuseum.com: Give your 3D accelerator a rest.
There was a collision between our galaxy and another one, and ours ripped a planet from the other one when the two galazies passed through each other.
Free Martian Whores!
5.5 × 10^-6, which sounds like pretty much the same chance as you being a reasonable human being.
So there are only 36,835 reasonable people on Earth. And they all live in Liechtenstein.
Reading it on other websites does make it more clear, but TFA is worthless. Slashdot's longstanding reputation for always checking its sources with the utmost journalistic yeah I can't keep a straight face any more.
... they come, they stay and there goes the neighborhood.
Is it an antimatter planet traveling at a peculiarly high velocity?
Between six to nine billion years ago, the Milky Way collided with another galaxy. ... In fact, to this day, the dust hasn't quite settled
Damn lawyers tying up the courts for six billion years over a traffic accident. Bastards.
Now, you're all experts in astronomical nomenclature? Have any of you even heard the term "extragalactic" before this article? People are whining like the planet has to come screaming out of the void from the edge of the universe to be "extragalactic". You don't like the definition, get your PhD in astrophysics and make up a new one.
I swear to God...I swear to God! That is NOT how you treat your human!
Though who knows how bad the TSA will be about mass relay travel...
LEEEEEEEEEEEEROY JENNNNKINS!
If you were blocking sigs, you wouldn't have to read this.
How... virile of us.
If more astronomers were women, I expect we'd talk about enfolding another galaxy and gently persuading a planet to move in with us.
If you were blocking sigs, you wouldn't have to read this.
Ah, but is it of an unusually high temperature? Is it made out of anti-matter that can degrade a GP hull?
I drank what? -- Socrates
That says it is unlikely it was captured from a Milky Way star. Says nothing about the odds it was captured from another star in the Helmi stream.
Well, I'm neither an astronomer nor a woman, so...
Free Martian Whores!
Sooooo, exextragalactic?
just like a space alien found on earth wouldn't be an extraterrestrial being, it'd be a being of extraterrestrial origin..
http://www.accountkiller.com/removal-requested
The real question is, can we find aliens?
The bible states a direct male lineage with names and ages from Adam (at Creation) to King Solomon. From there, it names kings and the lengths of their reigns. After that, events in the bible can be corroborated with records of other cultures, such as the death of the Chaldean King Nebuchadnezzar.
Perhaps the Vatican Observatory is a better source of information regarding the age of the universe according to religious folk? I'm sure the priest who developed the big bang theory would disagree with the flawed Ussher chronology you offer. The Ussher chronology is considered flawed even amongst religious communities.
The primary flaw with the Ussher chronology is that it requires a *literal* interpretation of genesis, that "day" is the literal 24 hour period that we all know and love. My understanding is that most christian faiths believe that "day" was used in a figurative manner and describes steps of undetermined length not 24 hour periods. Man was "created" on "day" 6, so events that occurred on "day" 3 and 4 can not be measured chronologically. To be generous, Ussher could at most date man but not the universe; only after man's arrival are "days" observable events.
However I'm no biblical scholar so I'll leave further arguments to the "experts". I'm just a guy who does not believe that religious people are necessarily scientifically illiterate. Holders of such a belief seem to be ironically clinging to a religious-like article of faith, a dogma of their own.
That is the funniest thing I have read today, thank you.
APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
Star clusters are very distinct from dwarf galaxies, and indeed tiny in comparison to...dwarf galaxies. Which are, you know, a galaxies other than our own.
One that hath name thou can not otter
How say this modded informative? I had to Google for WTF the post's talking about. Apparently it's from something called the Silmarillion.
Knowing the average Slashdotter, I would not be surprised if a poll found out that that there are actually more Slashdotters that have read the Silmarillion than those that have read the Bible.
Not that there's all too much difference between them, given Tolkien's own beliefs. ;-)
Tolkien was a bit better of a poet, though.
I drank what? -- Socrates
Tolkien was a bit better of a poet, though.
That goes without saying.
For one, Tolkien was most likely just one person. ;)
Finally we have where he's been hiding. Send in the Silver Surfer!!! Um ... let's hope we send the right Silver Surfer!!!
Sure enough, the cow costume was hanging up next to the superhero outfit and sailors uniform. (S,Spud)