Wide-field view of NGC 7173 (ground-based image): A wide-field image of the region around NGC 7173 constructed from ground-based images in the Digitized Sky Survey. The field-of-view is approximately 3.7 x 3.8 degrees.

Name: NGC 7173
Type: Local Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Piscis Austrinus
Distance: 110 million light years
Release date: 3 March 2009, 12:00
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

Wide-field view of NGC 7173 (ground-based image): A wide-field image of the region around NGC 7173 constructed from ground-based images in the Digitized Sky Survey. The field-of-view is approximately 3.7 x 3.8 degrees.

Name: NGC 7173
Type: Local Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Piscis Austrinus
Distance: 110 million light years
Release date: 3 March 2009, 12:00
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

Wide-field view of NGC 7173 (ground-based image): A wide-field image of the region around NGC 7173 constructed from ground-based images in the Digitized Sky Survey. The field-of-view is approximately 3.7 x 3.8 degrees.

Name: NGC 7173
Type: Local Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Piscis Austrinus
Distance: 110 million light years
Release date: 3 March 2009, 12:00
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

Wide-field view of NGC 7173 (ground-based image): A wide-field image of the region around NGC 7173 constructed from ground-based images in the Digitized Sky Survey. The field-of-view is approximately 3.7 x 3.8 degrees.

Name: NGC 7173
Type: Local Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Piscis Austrinus
Distance: 110 million light years
Release date: 3 March 2009, 12:00
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

A wide-field view of Piscis Austrinus, Aquarius and Capricornus (ground-based image): This picture, taken with a small ground-based camera, shows on its central-left portion the constellation Piscis Austrinus, the Southern Fish. The brightest star in the image is Fomalhaut. Also in this picture are parts of the constellations of Aquarius and Capricornus on the right.

Name: Piscis Austrinus
Type: Milky Way : Sky Phenomenon : Night Sky : Constellation
Category: Stars
Release date: 3 March 2009, 12:00
Credit: A. Fujii

Small galaxies yield clues about dark matter: These four dwarf galaxies are part of a census of small galaxies in the tumultuous heart of the nearby Perseus galaxy cluster. The galaxies appear smooth and symmetrical, suggesting that they have not been tidally disrupted by the pull of gravity in the dense cluster environment. Larger galaxies around them, however, are being ripped apart by the gravitational tug of other galaxies. The images, taken by NASA/ESA's Hubble Space Telescope, are evidence that the undisturbed galaxies are enshrouded by a "cushion" of dark matter, which protects them from their rough-and-tumble neighborhood. Dark matter is an invisible form of matter that accounts for most of the Universe's mass. Astronomers have deduced the existence of dark matter by observing its gravitational influence on normal matter, consisting of stars, gas, and dust. Observations by Hubble's Advanced Camera for Surveys spotted 29 dwarf elliptical galaxies in the Perseus Cluster, located 250 million light-years away and one of the closest galaxy clusters to Earth. Of those galaxies, 17 are new discoveries. The images were taken in 2005.

Name: Perseus Cluster
Type: Local Universe : Galaxy : Size : DwarfLocal Universe : Galaxy : Grouping : Cluster
Category: Galaxies
Distance: 250 million light years
Release date: 12 March 2009, 14:00
Credit: NASA, ESA and C. Conselice (University of Nottingham, U.K.)

Dramatically backlit dust lanes in NGC 7049: The NASA/ESA Hubble Space Telescope captured this image of NGC 7049 in the constellation of Indus, in the southern sky. A family of globular clusters appears as glittering spots dusted around the galaxy halo. Astronomers study the globular clusters in NGC 7049 to learn more about its formation and evolution. The dust lanes, which appear as a lacy web, are dramatically backlit by the millions of stars in the halo of NGC 7049.

Name: NGC 7049
Type: Local Universe : Galaxy : Type : SpiralLocal Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Indus
Distance: 100 million light years
Release date: 7 April 2009, 10:30
Credit: NASA, ESA and W. Harris (McMaster University, Ontario, Canada)

Wide-field view of NGC 7049 (ground-based image): A wide-field image of the region around NGC 7049 constructed from the images in the Digitized Sky Survey. The field-of-view is approximately 4.1 degrees x 3.1 degrees.

Name: NGC 7049
Type: Local Universe : Galaxy : Type : SpiralLocal Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Indus
Distance: 100 million light years
Release date: 7 April 2009, 10:30
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

Wide-field view of NGC 7049 (ground-based image): A wide-field image of the region around NGC 7049 constructed from the images in the Digitized Sky Survey. The field-of-view is approximately 4.1 degrees x 3.1 degrees.

Name: NGC 7049
Type: Local Universe : Galaxy : Type : SpiralLocal Universe : Galaxy : Type : Elliptical
Category: Galaxies
Constellation: Indus
Distance: 100 million light years
Release date: 7 April 2009, 10:30
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

A wide-field view of the constellation of Indus (ground-based image): This picture, taken with a small ground-based camera, shows on its central-left portion the constellation of Indus, in the southern sky.

Name: Indus
Type: Milky Way : Sky Phenomenon : Night Sky : Constellation
Category: Stars
Release date: 7 April 2009, 10:30
Credit: A. Fujii

Hubble celebrates 19th anniversary with fountain of youth: This brilliant image, courtesy of NASA/ESA's Hubble Space Telescope, is a fitting 19th anniversary tribute to the workhorse space observatory. This interacting group contains several galaxies, along with a "cosmic fountain" of stars, gas and dust that stretches over 100 000 light-years. Resembling a pair of owl's eyes, the two nuclei of the colliding galaxies can be seen in the process of merging at the upper left. The bizarre blue bridge of material extending out from the northern component looks as if it connects to a third galaxy but in reality the galaxy is in the background and not connected at all. The blue "fountain" is the most striking feature of this galaxy troupe and it contains complexes of super star clusters that may have as many as dozens of individual young star clusters in them.

Name: Arp 194
Type: Local Universe : Galaxy : Type : Interacting
Category: AnniversaryGalaxies
Constellation: Ursa Major
Distance: 600 million light years
Release date: 21 April 2009, 15:00
Credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)

Constellation region near Arp 194 (ground-based image): This picture, taken with a small ground-based camera, highlights the part of the northern sky that includes: Ursa Major, Coma Berenices, Canes Venatici and Cepheus. Arp 194 lies within the constellation of Cepheus, just below and to the left of the "foot" of the Great Bear (Ursa Major).

Name: Arp 194
Type: Milky Way : Sky Phenomenon : Night Sky : ConstellationLocal Universe : Galaxy : Type : Interacting
Category: Galaxies
Distance: 600 million light years
Release date: 21 April 2009, 15:00
Credit: NASA, ESA Z. Levay and A. Fujii