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Topic: Milky Way

NASA’s Spitzer Space Telescope to look for Galaxies in the far reaches of the Cosmos

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A new survey of galaxies by NASA’s Spitzer Space Telescope is taking a plunge into the deep and uncharted waters of our cosmos.

In one of the longest surveys the telescope will have ever performed, astronomers have begun a three-month expedition trawling for faint galaxies billions of light-years away.

The results are already yielding surprises.

Scientists "fish" for galaxies in this playful, digitally altered photo. The researchers are part of a program called SPLASH, which is using NASA's Spitzer Space Telescope to dive deep into the cosmic sea and find some of the most remote galaxies known. Early results are turning up surprisingly big "fish" -- massive galaxies -- in the darkest reaches of the universe, dating back to a time when our universe was less than one billion years old. (NASA/JPL-Caltech)

Scientists “fish” for galaxies in this playful, digitally altered photo. The researchers are part of a program called SPLASH, which is using NASA’s Spitzer Space Telescope to dive deep into the cosmic sea and find some of the most remote galaxies known. Early results are turning up surprisingly big “fish” — massive galaxies — in the darkest reaches of the universe, dating back to a time when our universe was less than one billion years old. (NASA/JPL-Caltech)

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NASA Telescopes reveal Giant Galaxy in the early stages of creation

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have for the first time caught a glimpse of the earliest stages of massive galaxy construction. The building site, dubbed “Sparky,” is a dense galactic core blazing with the light of millions of newborn stars that are forming at a ferocious rate.

The discovery was made possible through combined observations from NASA’s Hubble and Spitzer space telescopes, the W.M. Keck Observatory in Mauna Kea, Hawaii, and the European Space Agency’s Herschel space observatory, in which NASA plays an important role.

Artist's impression of a firestorm of star birth deep inside core of young, growing elliptical galaxy. (NASA, Space Telescope Science Institute)

Artist’s impression of a firestorm of star birth deep inside core of young, growing elliptical galaxy. (NASA, Space Telescope Science Institute)

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NASA says X-ray detector data reveals ancient Supernovas near Earth

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Once every 50 years, more or less, a massive star explodes somewhere in the Milky Way. The resulting blast is terrifyingly powerful, pumping out more energy in a split second than the sun emits in a million years. At its peak, a supernova can outshine the entire Milky Way.

It seems obvious that you wouldn’t want a supernova exploding near Earth. Yet there is growing evidence that one did—actually, more than one. About 10 million years ago, a nearby cluster of supernovas went off like popcorn. We know because the explosions blew an enormous bubble in the interstellar medium, and we’re inside it.

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NASA’s Kepler and Spitzer Space Telescopes’ data used to measure Exoplanet with amazing accuracy

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Barely 30 years ago, the only planets astronomers had found were located right here in our own solar system. The Milky Way is chock-full of stars, millions of them similar to our own sun. Yet the tally of known worlds in other star systems was exactly zero.

What a difference a few decades can make.

As 2014 unfolds, astronomers have not only found more than a thousand “exoplanets” circling distant suns, but also they’re beginning to make precise measurements of them.

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NASA’s Spitzer Space Telescope reveals triggering events behind some Supernova Explosions

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Supernovas are often thought of as the tremendous explosions that mark the ends of massive stars’ lives. While this is true, not all supernovas occur in this fashion. A common supernova class, called Type Ia, involves the detonation of white dwarfs — small, dense stars that are already dead.

New results from NASA’s Spitzer Space Telescope have revealed a rare example of Type Ia explosion, in which a dead star “fed” off an aging star like a cosmic zombie, triggering a blast. The results help researchers piece together how these powerful and diverse events occur.

This infrared image from NASA's Spitzer Space Telescope shows N103B -- all that remains from a supernova that exploded a millennium ago in the Large Magellanic Cloud, a satellite galaxy 160,000 light-years away from our own Milky Way. (NASA/JPL-Caltech/Goddard)

This infrared image from NASA’s Spitzer Space Telescope shows N103B — all that remains from a supernova that exploded a millennium ago in the Large Magellanic Cloud, a satellite galaxy 160,000 light-years away from our own Milky Way. (NASA/JPL-Caltech/Goddard)

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NASA says Herschel Space Observatory has found Young Galaxy acting mature for it’s age

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists have discovered a young galaxy acting in unexpectedly mature ways. The galaxy, called S0901, is rotating in a calm manner typical of more developed galaxies like our own spiral Milky Way.

“Usually, when astronomers examine galaxies in an early era, they find that turbulence plays a much greater role than it does in modern galaxies. But S0901 is a clear exception to that pattern,” said James Rhoads of Arizona State University, Tempe.

The young galaxy SDSS090122.37+181432.3, also known as S0901, is seen here as the bright arc to the left of the central bright galaxy. (NASA/STScI; S. Allam and team; and the Master Lens Database, L. A. Moustakas, K. Stewart, et al (2014))

The young galaxy SDSS090122.37+181432.3, also known as S0901, is seen here as the bright arc to the left of the central bright galaxy. (NASA/STScI; S. Allam and team; and the Master Lens Database, L. A. Moustakas, K. Stewart, et al (2014))

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Astronomers look to make bigger Telescopes like NASA’s Hubble and Spitzer Space Telescopes

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – More than 400 years ago, Galileo turned a primitive spyglass toward the sky, and in just a few nights learned more about the unseen heavens than all of the scientists and philosophers before him, combined.

Since then astronomers have been guided by a simple imperative: Make Bigger Telescopes. As the 21st century unfolds, the power of optics has grown a million-fold.

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NASA astronomers to use Hubble, Spitzer, Herschel space telescopes to examine Burned Out Elliptical Galaxies

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers using NASA’s Hubble and Spitzer space telescopes, and Europe’s Herschel Space Observatory, have pieced together the evolutionary sequence of compact elliptical galaxies that erupted and burned out early in the history of the universe.

Enabled by Hubble’s infrared imaging capabilities, astronomers have assembled for the first time a representative spectroscopic sampling of ultra-compact, burned-out elliptical galaxies — galaxies whose star formation was finished when the universe was only 3 billion years old, less than a quarter of its current estimated age of 13.8 billion years.

This graphic shows the evolutionary sequence in the growth of massive elliptical galaxies over 13 billion years, as gleaned from space-based and ground-based telescopic observations. The growth of this class of galaxies is quickly driven by rapid star formation and mergers with other galaxies. Image Credit: NASA, ESA, S. Toft (Niels Bohr Institute), and A. Feild (STScI)

This graphic shows the evolutionary sequence in the growth of massive elliptical galaxies over 13 billion years, as gleaned from space-based and ground-based telescopic observations. The growth of this class of galaxies is quickly driven by rapid star formation and mergers with other galaxies. Image Credit: NASA, ESA, S. Toft (Niels Bohr Institute), and A. Feild (STScI)

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NASA’s Hubble and Spitzer space telescopes along with ALMA telescope find trio of Young Galaxies Merging

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers using the combined power of the Atacama Large Millimeter/submillimeter Array (ALMA) telescope in Chile and NASA’s Hubble and Spitzer space telescopes have discovered a far-flung trio of primitive galaxies nestled inside an enormous blob of primordial gas nearly 13 billion light-years from Earth.

It’s possible the trio will eventually merge into a single galaxy similar to our own Milky Way.

The big blob-like structure shown here, named Himiko after the legendary ancient queen of Japan, turns out to be three galaxies thought to be in the process of merging into one. (NASA/JPL-Caltech/STScI/NAOJ/Subaru)

The big blob-like structure shown here, named Himiko after the legendary ancient queen of Japan, turns out to be three galaxies thought to be in the process of merging into one. (NASA/JPL-Caltech/STScI/NAOJ/Subaru)

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NASA’s Spitzer Space Telescope Celebrates 10 Years of Operation

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – Ten years after a Delta II rocket launched NASA’s Spitzer Space Telescope, lighting up the night sky over Cape Canaveral, FL, the fourth of the agency’s four Great Observatories continues to illuminate the dark side of the cosmos with its infrared eyes.

The telescope studied comets and asteroids, counted stars, scrutinized planets and galaxies, and discovered soccer-ball-shaped carbon spheres in space called buckyballs. Moving into its second decade of scientific scouting from an Earth-trailing orbit, Spitzer continues to explore the cosmos near and far.

A montage of images taken by NASA's Spitzer Space Telescope over the years. (Image Credit: NASA/JPL-Caltech)

A montage of images taken by NASA’s Spitzer Space Telescope over the years. (Image Credit: NASA/JPL-Caltech)

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