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.