2004 (continued)

• 5/26/2004 STScI-2004-18 51. Saturn Seen from Far and Near As Saturn grows closer through the eyes of the Cassini spacecraft, which is hurtling toward a rendezvous with the ringed world on June 30 (July 1, Universal Time), both Cassini... (More)
• 4/14/2004 STScI-2004-14 52. Hubble Observes Planetoid Sedna, Mystery Deepens Astronomers poring over 35 NASA Hubble Space Telescope images of the solar system's farthest known object, unofficially named Sedna, are surprised... (More)
• 1/22/2004 STScI-2004-05 53. The Colorful Lives of the Outer Planets Atmospheric features on Uranus and Neptune are revealed in images taken with the Space Telescope Imaging Spectrograph and the Advanced Camera for Surveys... (More)

2003

• 9/25/2003 STScI-2003-29 54. Hubble Uncovers Smallest Moons Yet Seen Around Uranus Astronomers have discovered two of the smallest moons yet found around Uranus. The new moons, uncovered by NASA's Hubble Space Telescope... (More)
• 9/9/2003 STScI-2003-23 55. The Slant on Saturn's Rings This is a series of images of Saturn, as seen at many different wavelengths, when the planet's rings were at their maximum tilt of 27 degrees toward Earth. Saturn experiences seasonal... (More)
• 9/6/2003 STScI-2003-25 56. Farthest, Faintest Solar System Objects Found Beyond Neptune Astronomers using NASA's Hubble Space Telescope have discovered three of the faintest and smallest objects ever detected beyond Neptune. (More)
• 9/5/2003 STScI-2003-26 57. Hubble Assists Rosetta Comet Mission Results from NASA's Hubble Space Telescope played a major role in preparing ESA's ambitious Rosetta mission for its new target, comet 67P/Churyumov-Gerasimenko (67P/C-G). (More)
• 8/27/2003 STScI-2003-22 58. Mars: Closest Encounter These two images, taken 11 hours apart with NASA's Hubble Space Telescope, reveal two nearly opposite sides of Mars. Hubble snapped these photos as the red planet was making its closest approach... (More)
• 5/15/2003 STScI-2003-17 59. Brighter Neptune Suggests a Planetary Change of Seasons Springtime is blooming on Neptune! This might sound like an oxymoron because Neptune is the farthest and coldest of the major planets. But observations... (More)

2002

• 10/7/2002 STScI-2002-17 60. Hubble Spots an Icy World Far Beyond Pluto NASA's Hubble Space Telescope has measured the largest object discovered in the solar system since the discovery of Pluto 72 years ago. Approximately... (More)
• 4/17/2002 STScI-2002-04 61. Hubble Hunts Down Binary Objects at the Fringe of Our Solar System The Hubble Space Telescope is hot on the trail of a puzzling new class of solar system object that might be called a Pluto "mini-me."... (More)

2001

• 10/11/2001 STScI-2001-31 62. Scientists Track "Perfect Storm" on Mars A pair of eagle-eyed NASA spacecraft — the Mars Global Surveyor (MGS) and Hubble Space Telescope — are giving amazed astronomers a ringside seat to the biggest... (More)
• 7/5/2001 STScI-2001-24 63. Hubble Captures Best View of Mars Ever Obtained From Earth Frosty white water ice clouds and swirling orange dust storms above a vivid rusty landscape reveal Mars as a dynamic planet in this sharpest... (More)
• 6/7/2001 STScI-2001-15 64. A Change of Seasons on Saturn Looming like a giant flying saucer in our outer solar system, Saturn puts on a show as the planet and its magnificent ring system nod majestically over the course of its 29-year... (More)
• 5/17/2001 STScI-2001-14 65. Astronomers Puzzled over Comet LINEAR's Missing Pieces Astronomers analyzing debris from a comet that broke apart last summer spied pieces as small as smoke-sized particles and as large as football-field-sized fragments. (More)

2000

• 12/14/2000 STScI-2000-38 66. Satellite Footprints Seen in Jupiter Aurora In this Hubble telescope picture, a curtain of glowing gas is wrapped around Jupiter's north pole like a lasso. This curtain of light, called an aurora, is produced when high-energy... (More)
• 9/14/2000 STScI-2000-31 67. Centaur's Bright Surface Spot Could be Crater of Fresh Ice The unexpectedly varied surface of a wayward piece of space debris has given astronomers new insights into the characteristics and behavior of a ghostly... (More)
• 8/7/2000 STScI-2000-27 68. Hubble Discovers Missing Pieces of Comet Linear To the surprise and delight of astronomers, the Hubble telescope discovered a small armada of "mini-comets" left behind from what some scientists had prematurely thought... (More)
• 7/28/2000 STScI-2000-26 69. Hubble Sees Comet Linear Blow its Top Lackluster comet LINEAR (C/1999 S4) unexpectedly threw astronomers a curve. Using the Hubble telescope, researchers were surprised to catch the icy comet in a brief, violent... (More)

1999

• 8/5/1999 STScI-1999-29 70. Hubble Views Ancient Storm in the Atmosphere of Jupiter When 17th-century astronomers first turned their telescopes to Jupiter, they noted a conspicuous reddish spot on the giant planet. (More)
• 6/30/1999 STScI-1999-27 71. A Closer Encounter with Mars Taking advantage of Mars's closest approach to Earth in eight years, astronomers using the Hubble telescope have taken the space-based observatory's sharpest views yet of the Red Planet. (More)
• 5/19/1999 STScI-1999-22 72. Colossal Cyclone Swirls near Martian North Pole Astronomers using the Hubble telescope have discovered an enormous cyclonic storm system raging in the northern polar regions of the planet Mars. (More)
• 4/20/1999 STScI-1999-13 73. Hubble Clicks Images of Io Sweeping across Jupiter While hunting for volcanic plumes on Io, the Hubble telescope captured these images of the volatile moon sweeping across the giant face of Jupiter. (More)
• 4/16/1999 STScI-1999-14 74. Hubble Shoots the Moon In a change of venue from peering at the distant universe, the Hubble telescope has taken a look at Earth's closest neighbor in space, the Moon. Hubble was aimed at one of the Moon's most dramatic... (More)
• 3/29/1999 STScI-1999-11 75. Huge Spring Storms Rouse Uranus from Winter Hibernation If springtime on Earth were anything like it will be on Uranus, we would be experiencing waves of massive storms, each one covering the country... (More)
• 3/4/1999 STScI-1999-08 76. A Mote in Hubble's Eye The Hubble telescope image is a typical Milky Way star field in the constellation Centaurus. Such snapshots can be used to study the evolution of stars that make up our galaxy. (More)
• 2/25/1999 STScI-1999-07 77. Martian Colors Provide Clues about Martian Water Hubble telescope images of Mars detail a rich geologic history and provide further evidence for water-bearing minerals on the planet's surface. (More)

1998

• 10/21/1998 STScI-1998-28 78. Astronomers Unveil Colorful Hubble Photo Gallery A vibrant celestial photo album of some of NASA Hubble Space Telescope's most stunning views of the universe is being unveiled today on the Internet. Called the Hubble Heritage... (More)
• 10/14/1998 STScI-1998-34 79. Hubble Provides a Moving Look at Neptune's Stormy Disposition Using powerful ground- and space-based telescopes, scientists have obtained a moving look at some of the wildest, weirdest weather in the solar system. ... (More)
• 10/14/1998 STScI-1998-35 80. Hubble Finds Many Bright Clouds on Uranus A Hubble telescope infrared view of Uranus reveals that the planet is surrounded by its four major rings and by 10 of its 17 known satellites. ... (More)
• 6/24/1998 STScI-1998-23 81. Hubble Space Telescope Helps Find Evidence that Neptune's Largest Moon Is Warming Up Observations obtained by the Hubble telescope and ground-based instruments reveal that Neptune's largest moon, Triton... (More)
• 4/23/1998 STScI-1998-18 82. Hubble Space Telescope Completes Eighth Year Of Exploration In honor of NASA Hubble Space Telescope's eighth anniversary, we have gift-wrapped Saturn in vivid colors. Actually, this image is courtesy of Hubble's infrared camera... (More)
• 3/27/1998 STScI-1998-13 83. Comet Hyakutake The Hubble telescope has probed the inner regions of Comet Hyakutake. This picture captures sunlight scattered by dust particles in the comet's inner coma. ... (More)
• 3/9/1998 STScI-1998-10 84. Astronomers Track Down Asteroids in Hubble Archive Astronomers have stumbled on an unusual asteroid hunting ground: the thousands of Hubble telescope images stored in the orbiting observatory's archive. ... (More)
• 1/7/1998 STScI-1998-05 85. Hubble Provides Clear Images of Saturn's Aurora Here is the picture of Saturn taken by the Hubble telescope in ultraviolet light. The glowing, swirling material at Saturn's poles is its auroral "curtains,"... (More)
• 1/7/1998 STScI-1998-04 86. Hubble Provide Complete View of Jupiter's Auroras The Hubble telescope has captured a complete view of Jupiter's northern and southern auroras. Images taken in ultraviolet light show both auroras, the oval-shaped objects... (More)

1997

• 11/20/1997 STScI-1997-37 87. Hubble Provides Infrared View of Moon, Ring, and Clouds Probing Jupiter's atmosphere for the first time, the Hubble telescope's infrared camera is providing a sharp glimpse of the planet's ring, moon, and high-altitude... (More)
• 11/20/1997 STScI-1997-36 88. Hubble Watches Uranus Using the Hubble telescope's visible-light camera, astronomers for the first time this century have detected clouds in the Northern Hemisphere of Uranus. The snapshots show banded structure... (More)
• 9/17/1997 STScI-1997-31 89. Hubble Watches the Red Planet as Mars Global Surveyor Begins Aerobraking This Hubble telescope picture of Mars was taken Sept. 12, 1997, one day after the arrival of the Mars Global Surveyor (MGS) spacecraft... (More)
• 9/4/1997 STScI-1997-27 90. Hubble Reveals Huge Crater on the Surface of the Asteroid Vesta Astronomers have used the Hubble Space telescope to discover a giant impact crater on the asteroid Vesta. (More)
• 7/15/1997 STScI-1997-24 91. Hubble Sees Rapid Weather Changes On Mars, New Dust Activity Astronomers using the Hubble telescope to track weather on Mars and how it might affect the Pathfinder landing... (More)
• 7/1/1997 STScI-1997-23 92. Hubble's Look At Mars Shows Canyon Dust Storm, Cloudy Conditions For Pathfinder Landing Hubble telescope pictures of Mars, taken June 27, 1997 in preparation for the July 4 landing of the Pathfinder spacecraft... (More)
• 6/19/1997 STScI-1997-21 93. Hubble Captures Volcanic Eruption Plume From Io The Hubble telescope has snapped a picture of a 400-kilometer-high (250-mile-high) plume of gas and dust from a volcanic eruption on Io, Jupiter's large, innermost moon. (More)
• 5/20/1997 STScI-1997-15 94. Hubble Finds Cloudy, Cold Weather Conditions for Mars-Bound Spacecraft As two NASA spacecraft speed toward a mid-year rendezvous with Mars, astronomers using the Hubble telescope are providing updated planetary weather reports... (More)
• 3/27/1997 STScI-1997-08 95. Hale-Bopp Observations with Hubble and IUE Surprise Astronomers Completing an unprecedented yearlong study of Comet Hale-Bopp with two NASA observatories, including the Hubble telescope, astronomers report that they are surprised... (More)
• 3/20/1997 STScI-1997-09 96. Hubble's Sharpest View of Mars The recently refurbished Hubble telescope obtained the sharpest view of Mars ever taken from Earth. This stunning portrait was taken with March 10... (More)

1996

• 11/1/1996 STScI-1996-34 97. Springtime Dust Storm Swirls at Martian North Pole Two Hubble telescope images of Mars, taken about a month apart, reveal a state-sized dust storm churning near the edge of the northern polar cap. (More)
• 10/24/1996 STScI-1996-33 98. Hubble Makes Movie of Neptune's Rotation and Weather The Hubble telescope has been used to assemble a time-lapse color movie showing a full 16-hour rotation of the distant planet Neptune. (More)
• 10/17/1996 STScI-1996-32 99. Hubble Follows Rapid Changes in Jupiter's Aurora The Hubble telescope's sharp view of the rapid, spectacular dance of luminescent gases high in Jupiter's atmosphere ? better known as aurora ? is allowing astronomers... (More)
• 10/4/1996 STScI-1996-30 100. Rare Hubble Portrait of Io and Jupiter This image shows Jupiter's volcanic moon Io passing above the turbulent clouds of the giant planet. The conspicuous black spot on Jupiter is Io's shadow. (More)