English: Light echo around V838 Monocerotis
In January 2002, a dull star in an obscure constellation suddenly became 600,000 times more luminous than our Sun, temporarily making it the brightest star in our Milky Way galaxy. The mysterious star, called V838 Monocerotis, has long since faded back to obscurity. But observations by NASA's Hubble Space Telescope of a phenomenon called a "light echo" around the star have uncovered remarkable new features. These details promise to provide astronomers with a CAT-scan-like probe of the three-dimensional structure of shells of dust surrounding an aging star.
Espaรฑol: Luz eco alrededor de V838 Monocerotis
En enero de 2002, una estrella sin brillo en una constelaciรณn oscura de repente se convirtiรณ en 600.000 veces mรกs luminosa que nuestro Sol, por lo que temporalmente la estrella mรกs brillante de nuestra galaxia, la Vรญa Lรกctea. La estrella misteriosa, llamada V838 Monocerotis, desde hace mucho tiempo se ha desvanecido de nuevo a la oscuridad. Pero las observaciones por el telescopio espacial de un fenรณmeno de Hubble de la NASA llamado "eco de luz" alrededor de la estrella han destapado nuevas caracterรญsticas notables. Estos detalles promesa de proporcionar a los astrรณnomos con una sonda CAT-scan-como de la estructura tridimensional de las cรกscaras de polvo que rodean una vieja estrella.
Franรงais : Aura de lumiรจre autour de V838 Monocerotis
Courant janvier 2002, l'รฉtoile V838 de la Licorne (en rouge, au centre) devint brusquement 60 000 fois plus brillante que le Soleil, ce qui fit d'elle l'รฉtoile temporairement la plus brillante de notre Voie Lactรฉe. Dans les mois suivant, ce flash cosmique, un phรฉnomรจne d'"รฉcho lumineux", devint observable sous la forme d'anneaux concentriques autour de l'รฉtoile. Ce phรฉnomรจne permet d'etudier la structure des nuages de poussiรจre entourant cette รฉtoile en fin de vie.
Portuguรชs: Eco luminoso em torno do V838 Monocerotis
Em janeiro de 2002, uma estrela sem graรงa em uma obscura constelaรงรฃo de repente tornou-se 600.000 vezes mais luminosa que o Sol, tornando-se temporariamente a estrela mais brilhante em nossa galรกxia Via Lรกctea. A estrela misteriosa, chamada V838 Monocerotis, jรก hรก muito desapareceu de volta ร obscuridade. Mas observaรงรตes feitas pelo Telescรณpio Espacial Hubble, da NASA, de um fenรดmeno chamado "eco de luz" em torno da estrela revelou extraordinรกrias novas funcionalidades.Estes detalhes prometem fornecer aos astrรดnomos com uma sonda CAT-scan-like a sondagem das estruturas tridimensionais de conchas de poeira em torno de uma estrela em envelhecimento.
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In January 2002, a dull star in an obscure constellation suddenly became 600,000 times more luminous than our Sun, temporarily making it the brightest star in our Milky Way galaxy. The mysterious star, called V838 Monocerotis, has long since faded back to