CDF-S HST/ACS/WFC Full Mosaic: Full mosaic of the Chandra Deep Field South.

Name: CDF-S, Chandra Deep Field South
Type: Early Universe : Cosmology : Morphology : Deep Field
Category: CosmologyGalaxies
Constellation: Fornax
Release date: 19 June 2003, 16:00
Credit: NASA, ESA, the GOODS Team and M. Giavalisco (STScI)

CDF-N CXO/ACIS Full Image: The Chandra Deep Field North.

Name: CDF-N, Chandra Deep Field North
Type: Early Universe : Cosmology : Morphology : Deep Field
Category: Cosmology
Constellation: Ursa Major
Release date: 19 June 2003, 16:00
Credit: NASA, ESA, the Chandra Deep Field-North Team

CDF-S CXO/ACIS Full Image: The Chandra Deep Field South.

Name: CDF-S, Chandra Deep Field South
Type: Early Universe : Cosmology : Morphology : Deep Field
Category: Cosmology
Constellation: Fornax
Release date: 19 June 2003, 16:00
Credit: NASA, ESA, the Chandra Deep Field-South Team

Globular Cluster M4 - NOAO Ground-Based Image: Three unlikely companions - two burned-out stars and a planet - orbit each other near the crowded core of ancient globular cluster M4, of more than 100,000 stars. Radio astronomers discovered the white dwarf and the other burned-out star - a rapidly spinning neutron star, called a pulsar - a decade ago. The third companion's identity was a mystery. Was it a planet or a brown dwarf? The object was too small and too dim to image. Hubble observations of the dim white dwarf helped astronomers to precisely measure the mass of the mystery object (2.5 times larger than the mass of Jupiter), confirming that it is a planet. In fact, it is the farthest and oldest known planet.

Name: M 4, Messier 4, NGC 6121
Type: Milky Way : Star : Grouping : Cluster : Globular
Category: Star Clusters
Constellation: Scorpius
Release date: 10 July 2003, 20:00
Credit: NOAO/AURA/NSF

Globular Cluster M4 - HST/WFPC2 Image: In this image, a Pulsar with Companion in Globular Cluster is visible. M4 is roughly 5,600 light-years (1,720 parsecs) from the Earth.

Name: Messier 4, NGC 6121
Type: Milky Way : Star : Grouping : Cluster : Globular
Category: Star Clusters
Constellation: Scorpius
Distance: 5500 light years
Release date: 10 July 2003, 20:00
Credit: NASA/ESA and H. Richer (University of British Columbia)

HST/WFPC2 Image with Location of Pulsar: The green circle in the image marks the location of a pulsar orbited by the oldest known planet.

Name: B 1620+26, Messier 4, NGC 6121
Type: Milky Way : Planet : Special Cases : Pulsar planetMilky Way : Star : Grouping : Cluster : Globular
Category: Star Clusters
Constellation: Scorpius
Distance: 5500 light years
Release date: 10 July 2003, 20:00
Credit: NASA/ESA and H. Richer (University of British Columbia)

Detail from HST/WFPC2 with Location of Pulsar: The green circle in the image marks the location of a pulsar orbited by the oldest known planet.

Name: B 1620+26, Messier 4, NGC 6121
Type: Milky Way : Planet : Special Cases : Pulsar planetMilky Way : Star : Grouping : Cluster : Globular
Category: Star Clusters
Distance: 5500 light years
Release date: 10 July 2003, 20:00
Credit: NASA/ESA and H. Richer (University of British Columbia)

Celestial fireworks: Resembling the puffs of smoke and sparks from a summer fireworksdisplay in this image from NASA/ESA Hubble Space Telescope, these delicate filaments are actually sheets of debris from a stellar explosion in a neighboring galaxy. Hubble's target was a supernova remnant within the Large Magellanic Cloud (LMC), a nearby, small companion galaxy to the Milky Way visible from the southern hemisphere. Denoted N 49, or DEM L 190, this remnant is from a massive star that died in a supernova blast whose light would have reached Earth thousands of years ago. This filamentary material will eventually be recycled into building new generations of stars in the LMC. Our own Sun and planets are constructed from similar debris of supernovae that exploded in the Milky Way billions of years ago.

Name: DEM L 190, LMC N 49
Type: Local Universe : Nebula : Type : Supernova Remnant
Category: Nebulae
Constellation: Dorado
Distance: 170000 light years
Release date: 3 July 2003, 15:00
Credit: NASA/ESA and The Hubble Heritage Team (STScI/AURA)

Too Close for Comfort: This Hubble Space Telescope view of the core of one of the nearest globular star clusters, called NGC 6397, resembles a treasure chest of glittering jewels. The cluster is located 8,200 light-years away in the constellation Ara. Here, the stars are jam-packed together. The stellar density is about a million times greater than in our Sun's stellar neighborhood. The stars are only a few light-weeks apart, while the nearest star to our Sun is over four light-years away.

Name: NGC 6397
Type: Milky Way : Star : Grouping : Cluster : Globular
Category: Star Clusters
Constellation: Ara
Distance: 9000 light years
Release date: 7 August 2003, 15:00
Credit: NASA/ESA and the Hubble Heritage Team (AURA/STScI)

Celestial composition: Amid a backdrop of far-off galaxies, the majestic dusty spiral, NGC 3370, looms in the foreground in this NASA/ESA Hubble Space Telescope image. Recent observations taken with the Advanced Camera for Surveys show intricate spiral arm structure spotted with hot areas of new star formation. But this galaxy is more than just a pretty face. Nearly 10 years earlier NGC 3370, in the constellation Leo, hosted a bright exploding star. In November 1994, the light of a supernova in nearby NGC 3370 reached Earth. This stellar outburst briefly outshone all of the tens of billions of other stars in its galaxy. Although supernovae are common, with one exploding every few seconds somewhere in the universe, this one was special. Designated SN 1994ae, this supernova was one of the nearest and best observed supernovae since the advent of modern, digital detectors. It resides 98 million light-years (30 megaparsecs) from Earth. The supernova was also a member of a special subclass of supernovae, the type Ia, the best tool astronomers have to chart the growth rate of the expanding universe.

Name: NGC 3370, SN 1994AE
Type: Local Universe : Star : Evolutionary Stage : SupernovaLocal Universe : Galaxy : Type : Spiral
Category: Galaxies
Constellation: Leo
Distance: 90 million light years
Release date: 4 September 2003, 15:00
Credit: NASA/ESA, The Hubble Heritage Team and A. Riess (STScI)

Full ACS Image of NGC 3370: Amid a backdrop of far-off galaxies, the majestic dusty spiral, called NGC 3370, looms in the foreground in this NASA Hubble Space Telescope image. Observations show an intricate spiral arm structure spotted with hot areas of new star formation. But this galaxy is more than just a pretty face. Nearly 10 years earlier NGC 3370, in the constellation Leo, hosted a bright exploding star.

Name: IRAS 10444+1732, NGC 3370
Type: Local Universe : Galaxy : Type : Spiral
Category: Galaxies
Constellation: Leo
Distance: 90 million light years
Release date: 4 September 2003, 15:00
Credit: NASA/ESA, The Hubble Heritage Team and A. Riess (STScI)