These new images of a small part of the sky, which
may go unrecognized, the survey Ultra Vista and reveal more than 200,000
galaxies. It's just a part of a large collection of images of all the
polls VISTA, fully processed, now THAT is making available to astronomers
around the world. Ultra Vista is a hidden treasure that is being used to
study distant galaxies in the early universe as well as many other scientific
projects.
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Friday, June 8, 2012
Thursday, June 7, 2012
Where is the center of the universe?
Where is the center of the
universe? Well, the answer is confusing: nowhere in
particular and also in all...
To understand these things have
to make one thing clear about the famous Big Bang: the famous big bang matter
filled the empty space, in fact it was a very rapid expansion of
space itself, which before the "bang" was fold completatamente on
itself at a point of infinite density that scientists call unique .
The Universe
Galactic survey
At the beginning of the mission,
Spitzer will hold a series of imaging surveys in the mid and far infrared.
Census Deep and a small region of space, including one centered on the Hubble
Deep Field (English) , study the young and distant universe with redshifts of
about 5, which corresponds to about 12 billion years.
Every planet must orbit around a star
In recent times the wandering planets, which is the name
often these unique worlds without star have gone from a rarity bordering on the
impossible to be an unexpectedly abundant class of planets.
Infrared Astronomy
The technical approaching of Spitzer is attached in four
basic physical values that define the importance of IR in the investigation of
astrophysical phenomena. The infrared region is part of the
electromagnetic spectrum and ranges from 1 micron (near infrared) to 200
microns (far infrared). Human eyes are only sensitive to light between 0.4
and 0.7 microns.
Infrared observations
expose cool state of matter.
Solid objects in space - from the size of a grain of
interstellar dust (less than a micron) to the giant planets - have temperatures
ranging from 3 to 1500 degrees Kelvin (K).
The Star conflict will be with Andromeda
Shock will grow a new galaxy, which sum the mass of the
Milky Way and Andromeda, where the Sun, according to observations made during
the last five years with the Hubble Space Telescope. The vast majority
of stars survives the impact, but will be in different orbits about the center
of the galaxy. The Sun, according to simulations from the Hubble observations,
blown away in the quiet region of the Milky Way where you are now and remain on
the periphery of the new galaxy, as the authors have announced the
investigation in a wheel press organized by NASA.
Wednesday, June 6, 2012
An elliptical spiral galaxy changed
The U.S. space agency NASA captured the evolution from an
elliptical spiral galaxy, a finding that will help to understand galaxy
evolution. With help of the Galaxy Evolution Explorer from NASA, the
researchers found how the galaxy NGC 3801 is losing some of the cold gas
inside symptom of this change. It has long been known that gas-rich
spiral galaxies like our Milky Way are contracted to create elliptical
galaxies as observed in the study, with a small population of stars.The
process that guides the great transformation of young galaxies spiral to
elliptical galaxies is the rapid loss of cold gas, which serves as fuel for the
formation of new stars. Experts believe they have found that feature in
the NGC 3801.
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