Planet-X Wanders Through & Caught On Telescope?

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HIP 13044 b is a Jupiter-like extrasolar planet orbiting the star HIP 13044, about 2,000 light years away from the Earth in the constellation Fornax. Its discovery was announced on November 18, 2010.[4] According to evolutionary theories, HIP 13044 was born in another galaxy, and became part of the Milky Way when the star's parent galaxy was absorbed by our own around 6-9 billion years ago, the remnants of the galaxy forming the Helmi stream.

The study that led to the discovery of the planet was performed by a team from the Max Planck Institute for Astronomy.[3] Rainer Klement of the Max Planck Institute said that the discovery is exciting for astronomers because it is the first time that a planetary system has been discovered in a stellar stream of extragalactic origin.[5]

The planet was discovered using the MPG/ESO 2.2-m ground-based telescope at the European Southern Observatory in La Silla, Chile, using the radial velocity method which involves detecting small wobbles in a star caused by a planet as it tugs on it.[5]

The discovery of the planet may also suggest the need for rethinking issues in planet formation and survival, since it is the first planet ever discovered to be circling a star that is both very old and extremely metal-poor.[6] The planet thus challenges the core-accretion model of planet formation, given that it may be unlikely a planetary core of sufficient mass was formed, and may signify it was formed via the competing disk instability model of planet formation.



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