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."

Comments

Re:I call bullshit on that

[Sockatume]

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.

Re:BS Alarms

[Colonel Korn]

Data: There's a planet orbiting a metal-poor star.
Conclusion: IT COMES FROM OUTSIDE OUR GALAXY. ....wait what?

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.

Re:Old

[icebraining]

The Bible makes no claims as to the age of the galaxy, only the age of the earth.

Wrong! God creates the stars after creating the Earth (the latter is created in the Third Day, while the former are only created in the Fourth), and since a galaxy by definition includes stars, it must be six thousands years old or younger.

Re:Old

[Gilmoure]

Yeah, Earth before stars; AINULINDALË and VALAQUENTA.

There was Eru, the One, who in Arda is called Ilúvatar; and he made first the Ainur, the Holy Ones, that were the offspring of his thought, and they were with him before aught else was made. And he spoke to them, propounding to them themes of music; and they sang before him, and he was glad.

Then Ilúvatar said to them: 'Of the theme that I have declared to you, I will now that ye make in harmony together a Great Music. And since I have kindled you with the Flame Imperishable, ye shall show forth your powers in adorning this theme, each with his own thoughts and devices, if he will. But I win sit and hearken, and be glad that through you great beauty has been wakened into song.'

But when they were come into the Void, Ilúvatar said to them: 'Behold your Music!' And he showed to them a vision, giving to them sight where before was only hearing; arid they saw a new World made visible before them, and it was globed amid the Void, and it was sustained therein, but was not of it.

Ilúvatar called to them, and said: 'I know the desire of your minds that what ye have seen should verily be, not only in your thought, but even as ye yourselves are, and yet other. Therefore I say: Eä! Let these things Be! And I will send forth into the Void the Flame Imperishable, and it shall be at the heart of the World, and the World shall Be; and those of you that will may go down into it. And suddenly the Ainur saw afar off a light, as it were a cloud with a living heart of flame; and they knew that this was no vision only, but that Ilúvatar had made a new thing: Eä, the World that Is.

There was need of light, [and] Aulë at the prayer of Yavanna wrought two mighty lamps for the lighting of the Middle-earth which he had built amid the encircling seas. Then Varda filled the lamps and Manwë hallowed them, and the Valar set them upon high pillars, more lofty far than are any mountains of the later days. One lamp they raised near to the north of Middle-earth, and it was named Illuin; and the other was raised in the south, and it was named Ormal; and the light of the Lamps of the Valar flowed out over the Earth, so that all was lit as it were in a changeless day.

But Melkor, trusting in the strength of Utumno and the might of his servants, came forth suddenly to war, and struck the first blow, ere the Valar were prepared; and he assailed the lights of Illuin and Ormal, and cast down their pillars and broke their lamps.

But as the ages drew on to the hour appointed by Ilúvatar for the coming of the Firstborn, Middle-earth lay in a twilight beneath the stars that Varda had wrought in the ages forgotten of her labours in Eä.

Then Varda went forth from the council, and she looked out from the height of Taniquetil, and beheld the darkness of Middle-earth beneath the innumerable stars, faint and far. Then she began a great labour, greatest of all the works of the Valar since their coming into Arda. She took the silver dews from the vats of Telperion, and therewith she made new stars and brighter against the coming of the Firstborn.