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Hubble Peers au mystérieux "trou de serrure" cosmique

Posted By NASA, James Webb, Hubble Space Telescope News Maker on 12-11-2022 22:35:47
Hubble Peers au mystérieux Hubble Peers au mystérieux

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Ce portrait particulier du télescope spatial Hubble de la NASA/ESA présente NGC 1999, une nébuleuse par réflexion dans la constellation d'Orion. NGC 1999 se trouve à environ 1 350 années-lumière de la Terre et se trouve près de la nébuleuse d'Orion, la région de formation d'étoiles massives la plus proche de la Terre. NGC 1999 lui-même est une relique de la formation récente d'étoiles - il est composé de débris laissés par la formation d'une étoile nouveau-née.

 

Ce portrait particulier du télescope spatial Hubble de la NASA/ESA présente NGC 1999, une nébuleuse par réflexion dans la constellation d'Orion. NGC 1999 se trouve à environ 1 350 années-lumière de la Terre et se trouve près de la nébuleuse d'Orion, la région de formation d'étoiles massives la plus proche de la Terre. NGC 1999 lui-même est une relique de la formation récente d'étoiles - il est composé de débris laissés par la formation d'une étoile nouveau-née.

 


Tout comme le brouillard qui s'enroule autour d'un réverbère, les nébuleuses à réflexion comme NGC 1999 brillent par la lumière d'une source intégrée. Dans le cas de NGC 1999, cette source est l'étoile nouveau-née susmentionnée V380 Orionis, qui est visible au centre de cette image. L'aspect le plus notable de l'apparence de NGC 1999, cependant, est le trou bien visible en son centre, qui ressemble à un trou de serrure noir d'encre aux proportions cosmiques.

Cette image a été créée à partir d'observations archivées de la Wide Field Planetary Camera 2 qui datent de peu de temps après la mission d'entretien 3A en 1999. À l'époque, les astronomes pensaient que la tache sombre dans NGC 1999 était quelque chose appelé un globule de Bok - un nuage de gaz dense et froid. , des molécules et de la poussière cosmique qui masque la lumière de fond. Cependant, des observations de suivi à l'aide d'une collection de télescopes, y compris l'observatoire spatial Herschel de l'ESA, ont révélé que la tache sombre est en fait une région vide de l'espace. L'origine de cette faille inexpliquée au cœur de NGC 1999 reste inconnue.

Crédit texte : Agence spatiale européenne (ESA)

 

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Tags: james webb, nasa, esa, mission artemis, lescope, lescope spatial hubble

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