Four Spiral Galaxies, From Ground (upper) and Hubble (lower)

Oct 6, 1999

Four Spiral Galaxies, From Ground (upper) and Hubble (lower)

Visible Light (upper) and Infrared (lower) Views of Starbirth Region Near Star Cluster R136

Sep 29, 1999

Visible Light (upper) and Infrared (lower) Views of Starbirth Region Near Star Cluster R136

Mars at 54 Million Miles (87 Million Km) From Earth

Jun 30, 1999

Mars at 54 Million Miles (87 Million Km) From Earth

Spiral Galaxy NGC 4603 With Location of Cepheids Marked

May 25, 1999

Spiral Galaxy NGC 4603 With Location of Cepheids Marked

Jupiter's Moon, Io, Sweeps Across the Planet; Io Volcano Spews Sulfur Dioxide Snow (lower right)

Apr 20, 1999

Jupiter's Moon, Io, Sweeps Across the Planet; Io Volcano Spews Sulfur Dioxide Snow (lower right)

Infrared Galaxy Gallery

Mar 18, 1999

Infrared Galaxy Gallery

Young Stars and Stellar Disks

Feb 9, 1999

Young Stars and Stellar Disks

Young Stars Surrounded by Disks of Dust

Feb 9, 1999

Young Stars Surrounded by Disks of Dust

DG Tau B: A Star System Emits Jets of Gas

Feb 9, 1999

DG Tau B: A Star System Emits Jets of Gas

Split, Distorted Light From Quasar PG1115+080 (left) and a Stretched Ring of Galactic Light (right)

Oct 26, 1998

Split, Distorted Light From Quasar PG1115+080 (left) and a Stretched Ring of Galactic Light (right)

Neptune's Dynamic Weather Patterns

Oct 14, 1998

Neptune's Dynamic Weather Patterns

Far-Flung Galaxy Clusters in the Hubble Medium Deep Sky Survey

Aug 27, 1998

Far-Flung Galaxy Clusters in the Hubble Medium Deep Sky Survey

Views of Galaxy Cluster MS1054-0321 From Ground and X-Ray Observatories (left) and Hubble (right)

Aug 19, 1998

Views of Galaxy Cluster MS1054-0321 From Ground and X-Ray Observatories (left) and Hubble (right)

Dust Disk Surrounds a Massive Black Hole in Elliptical Galaxy NGC 7052

Jun 18, 1998

Dust Disk Surrounds a Massive Black Hole in Elliptical Galaxy NGC 7052

A Bright Ring of Star Birth Around Core of Galaxy NGC 4314 (right), and Ground-Based Image (left)

Jun 11, 1998

A Bright Ring of Star Birth Around Core of Galaxy NGC 4314 (right), and Ground-Based Image (left)

Stellar Metamorphosis: Butterfly-Shaped Nebulae Emerge from Stellar Cocoons

Mar 19, 1998

Stellar Metamorphosis: Butterfly-Shaped Nebulae Emerge from Stellar Cocoons

Jupiter's Northern and Southern Auroras

Jan 7, 1998

Jupiter's Northern and Southern Auroras

Hubble's Planetary Nebula Gallery

Dec 17, 1997

Hubble's Planetary Nebula Gallery

Northern Hemispheric Clouds On Uranus

Nov 20, 1997

Northern Hemispheric Clouds On Uranus

Rejuvenated Stars, called "Blue Stragglers," in Globular Cluster 47 Tucanae (left)

Oct 29, 1997

Rejuvenated Stars, called "Blue Stragglers," in Globular Cluster 47 Tucanae (left)

Close-Up of Star Formation in Antennae Galaxy

Oct 21, 1997

Close-Up of Star Formation in Antennae Galaxy

Blobs in Space: the Legacy of Nova T Pyxidis

Sep 18, 1997

Blobs in Space: the Legacy of Nova T Pyxidis

Mars After the Mars Global Surveyor's Arrival

Sep 17, 1997

Mars After the Mars Global Surveyor's Arrival

Black Hole's Disk is Flooded With Ultraviolet Light

Sep 10, 1997

Black Hole's Disk is Flooded With Ultraviolet Light