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Browse All : Images from 1999 and 2001

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Borrelly's Rugged Surface
title Borrelly's Rugged Surface
date 09.22.2001
description In this highest resolution view of the icy, rocky nucleus of comet Borrelly, (about 45 meters or 150 feet per pixel) a variety of terrains and surface textures, mountains and fault structures, and darkened material are visible over the nucleus's surface. This was the final image of the nucleus of comet Borrelly, taken just 160 seconds before Deep Space 1's closest approach to it. This image shows the 8-km (5-mile) long nucleus about 3417 kilometers (over 2,000 miles) away. Smooth, rolling plains containing brighter regions are present in the middle of the nucleus and seem to be the source of dust jets seen in the coma. The rugged land found at both ends of the nucleus has many high ridges along the jagged line between day and night on the comet. This rough terrain contains very dark patches that appear to be elevated compared to surrounding areas. In some places the dark material accentuates grooves and apparent faults. Stereo analysis shows the smaller end of the nucleus (lower right) is tipped toward the viewer (out of frame). Sunlight is coming from the bottom of the frame. Deep Space 1 completed its primary mission testing ion propulsion and 11 other advanced, high-risk technologies in September 1999. NASA extended the mission, taking advantage of the ion propulsion and other systems to undertake this chancy but exciting, and ultimately successful, encounter with the comet. More information can be found on the Deep Space 1 home page at http://nmp.jpl.nasa.gov/ds1/. Deep Space 1 was launched in October 1998 as part of NASA's New Millennium Program, which is managed by JPL for NASA's Office of Space Science, Washington, D.C. The California Institute of Technology manages JPL for NASA. *Image Credit*: NASA/JPL
Comet Borrelly Composite
title Comet Borrelly Composite
date 09.22.2001
description A composite of images from NASA's Deep Space 1 spacecraft shows features of comet Borrelly's nucleus, dust jets escaping the nucleus and the cloud-like "coma" of dust and gases surrounding the nucleus. False color is used to reveal details of the jets and coma. The images were taken when Deep Space 1 was about 4,800 kilometers (3,000 miles) from Borrelly during a Sept. 22, 2001, flyby. Borrelly's nucleus is about 8 kilometers (5 miles) from end to end, so the field of view is about 40 kilometers (25 miles) across. The Sun shines from the bottom of the image. The main dust jet, seen extending toward the bottom left, heads away from the comet in a direction that is about 30 degrees off the direction straight toward the Sun from the comet. The colors show about three orders of magnitude in the brightness of the dust jets and coma. Red indicates about one-tenth the brightness as the brightness of the nucleus, blue one-one-hundredth, purple one-one-thousandth. The red bumps near the nucleus indicate where the jet resolves into three distinct, narrow jets, which likely come from discrete source points on the surface. Deep Space 1 completed its primary mission testing ion propulsion and 11 other advanced, high-risk technologies in September 1999. NASA extended the mission, taking advantage of the ion propulsion and other systems to undertake this encounter with the comet. More information can be found on the Deep Space 1 home page. Deep Space 1 was launched Oct. 24, 1998, as part of NASA's New Millennium Program, which is managed by JPL for NASA's Office of Space Science, Washington, D.C. The California Institute of Technology manages JPL for NASA. *Image Credit*: NASA/JPL
Erupting Io
title Erupting Io
description This means the plume is actually about 385 kilometers (239 miles) high, just like Pele. The uncertainty in estimating the height is about 30 kilometers (19 miles), so the plume could be anywhere from 355 to 415 kilometers (221 to 259 miles) high. If this new plume deposit is just one millimeter (four one- hundredths of an inch) thick, then the eruption produced more ash than the 1980 eruption of Mount St. Helens in Washington. These Cassini images were acquired on Jan. 2, 2001, except for the frame at the far right, which was acquired a day earlier. The Galileo images were acquired on Dec. 30 and 31, 2000. Cassini was about 10 million kilometers (6 million miles) from Io, 10 times farther than Galileo. *Image Credit*: NASA, Two tall volcanic plumes and the rings of red material they have deposited onto surrounding surface areas appear in images taken of Jupiter's moon Io by NASA's Galileo and Cassini spacecraft in late December 2000 and early January 2001. One plume, from the volcano Pele, shoots upward nearly 400 kilometers (250 miles) from the surface near Io's equator. The plume has been active for at least four years and, until now, had been far larger than any other plume seen on Io. The images also show a second plume about the same size, closer to Io's north pole. This plume had never been seen before. It is associated with a fresh eruption from the Tvashtar Catena volcanic area. The observations were made during joint studies of the Jupiter system while Cassini was passing Jupiter on its way to Saturn. Galileo passed closer to Io for higher-resolution images, and Cassini acquired images at ultraviolet wavelengths, better for detecting active volcanic plumes. The Cassini ultraviolet images, upper right, reveal two gigantic, actively erupting plumes of gas and dust. Near the equator, just the top of Pele's plume is visible where it projects into sunlight. None of it would be illuminated if it were less than 240 kilometers (150 miles) high. These images indicate a total height for Pele of 390 kilometers (242 miles). The Cassini image at far right shows a bright spot over Pele's vent. Although the Pele hot spot has a high temperature, silicate lava cannot be hot enough to explain a bright spot in the ultraviolet, so the origin of this bright spot is a mystery, but it may indicate that Pele was unusually active when the picture was taken. Also visible is a plume near Io's north pole. Although 15 active plumes over Io's equatorial regions have been detected in hundreds of images from NASA's Voyager and Galileo spacecraft, this is the first image ever acquired of an active plume over a polar region of Io. The plume projects about 150 kilometers (about 90 miles) over the limb, the edge of the globe. If it were erupting from a point on the limb, it would be only slightly larger than a typical Ionian plume, but the image does not reveal whether the source is actually at the limb or beyond it, out of view. A distinctive feature in Galileo images since 1997 has been a giant red ring of Pele plume deposits about 1,400 kilometers (870 miles) in diameter. The Pele ring is seen again in one of the new Galileo images, lower left. When the new Galileo images were returned this month, scientists were astonished to see a second giant red ring on Io, centered around Tvashtar Catena at 63 degrees north latitude. (To see a comparison from before the ring was deposited, see images PIA-01604 or PIA-02309.) Tvashtar was the site of an active curtain of high-temperature silicate lava imaged by Galileo in November 1999 and February 2000 (image PIA- 02584). The new ring shows that Tvashtar must be the vent for the north polar plume imaged by Cassini from the other side of Io.
The Antennae: Chandra Finds …
Name The Antennae: Chandra Finds Abundance of Ultraluminous X-ray Sources
Category Normal Galaxies & Starburst Galaxies
Release Date June 05, 2001
M82: Starburst Galaxy With U …
Name M82: Starburst Galaxy With Ultraluminous X-Ray Sources
Category Normal Galaxies & Starburst Galaxies
Release Date June 05, 2001
Chandra Deep Field-North
Name Chandra Deep Field-North
Category Cosmology/Deep Fields/X-ray Background, Black Holes
Release Date March 13, 2001
Abell 2390 & MS2137.3-2353: …
Name Abell 2390 & MS2137.3-2353: Astronomers Take the Measure of Dark Matter in universe
Category Groups & Clusters of Galaxies
Release Date September 06, 2001
3C58: Young Pulsar Reveals C …
Name 3C58: Young Pulsar Reveals Clues to Supernova
Category Neutron Stars/X-ray Binaries, Supernovas & Supernova Remnants
Release Date September 06, 2001
NGC 253: Chandra Sees Wealth …
Name NGC 253: Chandra Sees Wealth Of Black Holes In Star-Forming Galaxies
Category Normal Galaxies & Starburst Galaxies
Release Date June 05, 2001
), Hubble Optical Image of N …
Name ), Hubble Optical Image of NGC 1637, Close-Up, Merged Chandra X-ray Image of NGC 1637, Full Field, NOAO Optical Image of NGC 1637, X-ray/Optical Overlay of NGC 1637
Chandra Deep Field-South:
Name Chandra Deep Field-South:
Category Cosmology/Deep Fields/X-ray Background, Black Holes
Release Date March 13, 2001
The Antennae: Chandra Locate …
Name The Antennae: Chandra Locates Mother Lode of Planetary Ore in Colliding Galaxies
Category Normal Galaxies & Starburst Galaxies
Release Date January 07, 2004
Female Astronauts
Title Female Astronauts
Full Description Astronauts Dr. N. Jan Davis (left) and Dr. Mae C. Jemison (right) were mission specialists on board the STS-47 mission. Born on November 1, 1953 in Cocoa Beach, Florida, Dr. N. Jan Davis received a Master degree in Mechanical Engineering in 1983 followed by a Doctorate in Engineering from the University of Alabama in Huntsville in 1985. In 1979 she joined NASA Marshall Space Flight Center as an aerospace engineer. A veteran of three space flights, Dr. Davis has logged over 678 hours in space since becoming an astronaut in 1987. She flew as a mission specialist on STS-47 in 1992 and STS-60 in 1994, and was the payload commander on STS-85 in 1997. In July 1999, she transferred to the Marshall Space Flight Center, where she became Director of Flight Projects. Dr. Mae C. Jemison, the first African-American woman in space, was born on October 17, 1956 in Decatur, Alabama but considers Chicago, Illinois her hometown. She received a Bachelor degree in Chemical Engineering (and completed the requirements for a Bachelor degree in African and Afro-American studies) at Stanford University in 1977, and a Doctorate degree in medicine from Cornell University in 1981. After receiving her doctorate, she worked as a General Practitioner while attending graduate engineering classes in Los Angeles. She was named an astronaut candidate in 1987, and flew her first flight as a science mission specialists on STS-47, Spacelab-J, in September 1992, logging 190 hours, 30 minutes, 23 seconds in space. In March 1993, Dr. Jemison resigned from NASA, thought she still resides in Houston, Texas. She went on to publish her memoirs, Find Where the Wind Goes: Moments from My Life, in 2001. The astronauts are shown preparing to deploy the lower body negative pressure (LBNP) apparatus in this 35mm frame taken in the science module aboard the Earth-orbiting Space Shuttle Endeavor. Fellow astronauts Robert L. Gibson (Commander), Curtis L. Brown (Junior Pilot), Mark C. Lee (Payload Commander), Jay Apt (Mission Specialist), and Mamoru Mohri (Payload Specialist) joined the two on their maiden space flight. The Spacelab-J mission was a joint effort between Japan and the United States.
Date 09/15/1992
NASA Center Johnson Space Center
Intergalactic 'Pipeline' Fun …
Title Intergalactic 'Pipeline' Funnels Matter Between Colliding Galaxies
General Information What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. Back to top [ #top ]
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
A Change of Seasons on Satur …
Title A Change of Seasons on Saturn
General Information What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ]
Hubble Unveils a Galaxy in L …
Title Hubble Unveils a Galaxy in Living Color
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
'Survivor' Planets: Astronom …
Title 'Survivor' Planets: Astronomers Witness First Steps of Planet Growth - and Destruction
Hint of Planet-Sized Drifter …
Title Hint of Planet-Sized Drifters Bewilders Hubble Scientists
Hint of Planet-Sized Drifter …
Title Hint of Planet-Sized Drifters Bewilders Hubble Scientists
Hint of Planet-Sized Drifter …
Title Hint of Planet-Sized Drifters Bewilders Hubble Scientists
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Hint of Planet-Sized Drifter …
Title Hint of Planet-Sized Drifters Bewilders Hubble Scientists
Hint of Planet-Sized Drifter …
Title Hint of Planet-Sized Drifters Bewilders Hubble Scientists
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Star Clusters Born in the Wr …
Title Star Clusters Born in the Wreckage of Cosmic Collisions
Gravitational Lens Helps Hub …
Title Gravitational Lens Helps Hubble and Keck Discover Galaxy Building Block
Thackeray's Globules in IC 2 …
Title Thackeray's Globules in IC 2944
General Information What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ]
Thackeray's Globules in IC 2 …
Title Thackeray's Globules in IC 2944
General Information What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ]
Thackeray's Globules in IC 2 …
Title Thackeray's Globules in IC 2944
General Information What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ]
Thackeray's Globules in IC 2 …
Title Thackeray's Globules in IC 2944
General Information What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ]
Hubble Makes First Direct Me …
Title Hubble Makes First Direct Measurements of Atmosphere on World Around another Star
General Information What is a Space Science Update? Major Hubble discoveries on NASA television ... Astronomers explain their Hubble discoveries at a press conference, called a Space Science Update (SSU), broadcast on NASA television. The SSU includes a question and answer session with members of the media. Back to top [ #top ]
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
Hubble Hunts Down Binary Obj …
Title Hubble Hunts Down Binary Objects at the Fringe of Our Solar System
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