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NASA: NASA’s SOFIA Finds Missing Link Between Supernovae and Planet Formation .- NASA’s SOFIA Finds , descubre eslabón perdido entre supernovas y Planeta Formación
Hola amigos: A VUELO DE UN QUINDE EL BLOG., hemos recibido de la Agencia Espacial NASA, la información que NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA), ha descubierto el eslabón perdido entre las Supernovas y los planetas en formación, este descubrimiento fue posible en la Supernova Remnant Sagittarius A East.
SOFIA data reveal warm dust (white) surviving
inside a supernova remnant. The SNR Sgr A East cloud is traced in X-rays (blue).
Radio emission (red) shows expanding shock waves colliding with surrounding
interstellar clouds (green).
NASA/CXO/Herschel/VLA/Lau et al
Using NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA), an
international scientific team discovered that supernovae are capable of
producing a substantial amount of the material from which planets like Earth can
These findings are published in the March 19 online issue of Science
"Our observations reveal a particular cloud produced by a supernova explosion
10,000 years ago contains enough dust to make 7,000 Earths," said Ryan Lau of
Cornell University in Ithaca, New York.
The research team, headed by Lau, used SOFIA's airborne telescope and the
Faint Object InfraRed Camera for the SOFIA Telescope, FORCAST, to take detailed
infrared images of an interstellar dust cloud known as Supernova Remnant
Sagittarius A East, or SNR Sgr A East.
Supernova remnant dust detected by SOFIA (yellow)
survives away from the hottest X-ray gas (purple). The red ellipse outlines the
supernova shock wave. The inset shows a magnified image of the dust (orange) and
gas emission (cyan).
NASA/CXO/Lau et al
The team used SOFIA data to estimate the total mass of dust in the cloud from
the intensity of its emission. The investigation required measurements at long
infrared wavelengths in order to peer through intervening interstellar clouds
and detect the radiation emitted by the supernova dust.
Astronomers already had evidence that a supernova’s outward-moving shock wave
can produce significant amounts of dust. Until now, a key question was whether
the new soot- and sand-like dust particles would survive the subsequent inward
“rebound” shock wave generated when the first, outward-moving shock wave
collides with surrounding interstellar gas and dust.
"The dust survived the later onslaught of shock waves from the supernova
explosion, and is now flowing into the interstellar medium where it can become
part of the 'seed material' for new stars and planets," Lau explained.
These results also reveal the possibility that the vast amount of dust
observed in distant young galaxies may have been made by supernova explosions of
early massive stars, as no other known mechanism could have produced nearly as
"This discovery is a special feather in the cap for SOFIA, demonstrating how
observations made within our own Milky Way galaxy can bear directly on our
understanding of the evolution of galaxies billions of light years away," said
Pamela Marcum, a SOFIA project scientist at Ames Research Center in Moffett
SOFIA is a heavily modified Boeing 747 Special Performance jetliner that
carries a telescope with an effective diameter of 100 inches (2.5 meters) at
altitudes of 39,000 to 45,000 feet (12 to 14 km). SOFIA is a joint project of
NASA and the German Aerospace Center. The aircraft observatory is based at
NASA's Armstrong Flight Research Center facility in Palmdale, California. The
agency’s Ames Research Center in Moffett Field, California, is home to the SOFIA
Science Center, which is managed by NASA in cooperation with the Universities
Space Research Association in Columbia, Maryland, and the German SOFIA Institute
at the University of Stuttgart.