Hubble Space Telescope News

Hubble Views the Densest Known Star Cluster in the Milky Way

May 26, 2015

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The Densest Known Star Cluster in the Milky Way

This newly released Hubble image shows the Arches Cluster, the densest known star cluster in the Milky Way. The Arches Cluster is located about 25,000 light-years from Earth in the constellation of Sagittarius (The Archer), close to the heart of our galaxy, the Milky Way. It is, like its neighbour the Quintuplet Cluster, a fairly […]

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Hubble Uncovers New Clues about a Hefty, Rapidly Aging Star

May 22, 2015

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Hubble Observations of NaSt1

Using the Hubble Space Telescope, a team of astronomers has uncovered surprising new clues about a hefty, rapidly aging star whose behavior has never been seen before in our Milky Way galaxy. Nicknamed it “Nasty 1,” a play on its catalog name of NaSt1, the star may represent a brief transitory stage in the evolution […]

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Hubble Image of the Week – Tangled NGC 6240

May 18, 2015

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Hubble Revisits Galaxy NGC 6240

First viewed in 2008, this Hubble image shows galaxy NGC 6240. Not all galaxies are neatly shaped, as this new NASA/ESA Hubble Space Telescope image of NGC 6240 clearly demonstrates. Hubble previously released an image of this galaxy back in 2008, but the knotted region, shown here in a pinky-red hue at the center of […]

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Hubble Reveals Diffusion of Stars Through the Core of the Globular Cluster 47 Tucanae

May 15, 2015

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Astronomers Measure the Rate of Diffusion of Stars Through the Core of the Globular Cluster 47 Tucanae

New images from the Hubble Space Telescope show for the first time snapshots of white dwarf stars beginning their 40-million-year migration from the crowded center of an ancient star cluster to the less populated suburbs. White dwarfs are the burned-out relics of stars that rapidly lose mass, cool down and shut off their nuclear furnaces. […]

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Hubble Views Elliptical Galaxy NGC 3923

May 11, 2015

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Hubble Image of Elliptical Galaxy NGC 3923

This Hubble image of the week shows elliptical galaxy NGC 3923, which is located over 90 million light-years away in the constellation of Hydra. NGC 3923 is an example of a shell galaxy where the stars in its halo are arranged in layers. Finding concentric shells of stars enclosing a galaxy is quite common and […]

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Halo Around the Andromeda Galaxy is Larger Than Previously Thought

May 8, 2015

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Hubble Reveals Giant Halo Around the Andromeda Galaxy

Using the Hubble Space Telescope, astronomers have discovered that the immense halo of gas enveloping the Andromeda galaxy is about six times larger and 1,000 times more massive than previously thought. The dark, nearly invisible halo stretches about a million light-years from its host galaxy, halfway to our own Milky Way galaxy. This finding promises […]

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Astronomers Discover the Farthest Galaxy to Date

May 6, 2015

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Hubble Discovers Distant Luminous Galaxy

An international team of astronomers has pushed back the cosmic frontier of galaxy exploration to a time when the universe was only 5% of its present age, revealing a galaxy that existed over 13 billion years ago. The team discovered an exceptionally luminous galaxy more than 13 billion years in the past and determined its […]

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Hubble Image of the Week – The Peculiar Asymmetry of Galaxy NGC 949

May 4, 2015

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Hubble Views Galaxy NGC 949

This newly released Hubble image provides the clearest ever view of galaxy NGC 949, which lies over 30 million light-years away in the constellation of Triangulum. The galaxy has an unusual shape, made more obscure due to its inclination. From our point of view, it is difficult to discern exactly what type of galaxy NGC […]

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Hubble Image of the Week: Galactic Refurbishment

April 28, 2015

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Hubble Views UGC 5797

This newly released Hubble image shows galaxy UGC 5797. The smudge of stars at the center of this NASA/ESA Hubble Space Telescope image is a galaxy known as UGC 5797. UGC 5797 is an emission line galaxy, meaning that it is currently undergoing active star formation. The result is a stellar population that is constantly […]

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Celestial Fireworks – Official Image for Hubble’s 25th Anniversary

April 23, 2015

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Hubble Image of the Day Westerlund 2

This Hubble image of star cluster Westerlund 2 was chosen as Hubble’s 25th anniversary image. The brilliant tapestry of young stars flaring to life resemble a glittering fireworks display in the 25th anniversary NASA Hubble Space Telescope image, released to commemorate a quarter century of exploring the solar system and beyond since its launch on […]

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New Observations Reveal How Star Formation Shuts Down in Elliptical Galaxies

April 20, 2015

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Hubble and VLT Observations Show How Star Formation Shuts Down from the Core

New research reveals that three billion years after the Big Bang, massive elliptical galaxies still made stars on their outskirts, but no longer in their interiors. Astronomers have shown for the first time how star formation in “dead” galaxies sputtered out billions of years ago. The NASA/ESA Hubble Space Telescope and ESO’s Very Large Telescope […]

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Hubble Image of the Week – Peculiar Galaxy ESO 162-17

April 20, 2015

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Hubble Views Peculiar Galaxy ESO 162-17

This Hubble image of the week shows peculiar galaxy ESO 162-17, which located about 40 million light-years away. This galaxy goes by the name of ESO 162-17 and is located about 40 million light-years away in the constellation of Carina. At first glance this image seems like a fairly standard picture of a galaxy with […]

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Hubble Space Telescope Views Elliptical Galaxy NGC 2865

April 13, 2015

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Hubble Views Elliptical Galaxy NGC 2865

This Hubble image of the week shows elliptical galaxy NGC 2865, which is located roughly 100 million light-years from Earth. This NASA/ESA Hubble Space Telescope image shows an elliptical galaxy called NGC 2865. It lies just over 100 million light-years away from us in the constellation of Hydra — The Sea Serpent — and was […]

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New Research Helps Reveal the Evolution of Milky Way-Like Galaxies

April 9, 2015

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Evolution of M* Galaxy Progenitors

New research provides the most complete picture yet of how galaxies like the Milky Way grew over the past 10 billion years into today’s majestic spiral galaxies. In one of the most comprehensive multi-observatory galaxy surveys yet, astronomers find that galaxies like our Milky Way underwent a stellar “baby boom,” churning out stars at a […]

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Hubble Image of the Week: The Crammed Center of Messier 22

April 6, 2015

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New Hubble Image of Globular Cluster Messier 22

This newly released Hubble image shows the center of the globular cluster Messier 22, also known as M22. Globular clusters are spherical collections of densely packed stars, relics of the early years of the Universe, with ages of typically 12 to 13 billion years. This is very old considering that the Universe is only 13.8 […]

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Hubble Views Spiral Galaxy NGC 3021

March 30, 2015

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Hubble Views Spiral Galaxy NGC 3021

This newly released Hubble image shows the spiral galaxy NGC 3021, which lies about 100 million light-years away in the constellation of Leo Minor. Among many other types of stars, this galaxy contains Cepheid variable stars, which can be used work out the distance to the galaxy. These stars pulsate at a rate that is […]

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Chandra and Hubble Find Clues that May Help Identify Dark Matter

March 27, 2015

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Astronomers Find Clues that May Help Identify Dark Matter

In a newly published study, astronomers used X-rays from Chandra and optical data from Hubble to help narrow down the possibilities of what dark matter can be and to set new limits on how dark matter interacts with itself. Using observations from NASA’s Hubble Space Telescope and Chandra X-ray Observatory, astronomers have found that dark […]

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