Credits: NASA, ESA, and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration; Acknowledgment: R. Chandar (University of Toledo) and J. Miller (University of Michigan)
178 Comet Shoemaker-Levy 9 Impact Sites on Jupiter
This image of the giant planet Jupiter, by NASA's Hubble Space Telescope, reveals the impact sites of fragments "D" and "G" from Comet Shoemaker-Levy 9. The large feature was created by the impact of fragment "G" on July 18, 1994 at 3:28 a.m. EDT. It entered Jupiter's atmosphere from the south at a 45-degree angle, and the resulting ejecta appears to have been thrown back along that direction. The smaller feature to the left of the fragment "G" impact site was created on July 17, 1994, at 7:45 a.m. EDT by the impact of fragment "D". This image was taken 1 hour and 45 minutes after fragment "G" impacted the planet. The "G" impact has concentric rings around it, with a central dark spot 1,550 miles (2,500 km) in diameter. This dark spot is surrounded by a thin dark ring 4,660 miles (7,500 km) in diameter. The dark thick outermost ring's inner edge has a diameter of 7,460 miles (12,000 km) - about the size of the Earth. The picture is a combination of separate images taken thorugh several color filters to create this "true color" rendition of Jupiter's multi- colored clouds. The impact sites are located in Jupiter's southern hemisphere at a latitude of 44 degrees.
Credits: Credit: H. Hammel, MIT and NASA
1107 Global Map or Mars, Cylindrical Projection
Credits: J. Bell (Cornell University)
This black and white picture of Jupiter, taken in green light at 1:14 a.m. on the 11th March, 1991 by the Planetary Camera on NASA's Hubble Space Telescope, shows a wealth of fine detail in the clouds that cover the planet. The Great Red Spot is seen at the lower right, also on the right near the equator the satellite Europa is disappearing behind the limb of the planet. The dark 'j' shaped clouds along the equator are the result of a pattern of intense jet streams in the Jovian atmosphere. This picture is as sharp as the Voyager pictures taken five days before the closest approach in 1979. Detailed comparison with the Voyager pictures shows that a totally different cloud structure has formed over the past twelve years. An HST investigator group is planning to collect Jupiter images using the Planetary Camera on a regular basis over the next several years to record the detailed evolution of Jovian weather. These data will be taken in several colors to study the weather at different altitudes in the atmosphere. This will allow meteorologists to apply the complex computer programs used to make weather predictions for the very different atmospheric conditions found on Jupiter. Comparison of the computer predictions with the new HST results can be used to refine the computer atmospheric models in a way which will help make improved forecasts of the weather on Earth. The HST Wide Field Planetary Camera was designed and built at the Jet Propulsion Laboratory of the California Institute of Technology in Pasadena, California.
Credits: Credit: NASA
1106 Dust Storm Engulfs Mars
Credits: NASA, James Bell (Cornell Univ.), Michael Wolff (Space Science Inst.), and The Hubble Heritage Team (STScI/AURA)
2585 Barred Spiral Galaxy NGC 6217
This is the first image of a celestial object taken with the newly repaired Advanced Camera for Surveys (ACS). The camera was restored to operation during the STS-125 servicing mission to upgrade the Hubble Space Telescope. The barred spiral galaxy NGC 6217 was photographed on June 13 and July 8, 2009, as part of the initial testing and calibration of Hubble's ACS. The galaxy lies 60 million light-years away in the north circumpolar constellation Ursa Major.
Credits: NASA, ESA, and the Hubble SM4 ERO Team
4423 HUBBLE FAVORITE: Stephan's Quintet
Credits: NASA, ESA, and the Hubble SM4 ERO Team
2105 Pluto and Its Moons: Charon, Nix, and Hydra
A pair of small moons that NASA's Hubble Space Telescope discovered orbiting Pluto now have official names: Nix and Hydra. Photographed by Hubble in 2005, Nix and Hydra are roughly 5,000 times fainter than Pluto and are about two to three times farther from Pluto than its large moon, Charon, which was discovered in 1978.
Credits: NASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the HST Pluto Companion Search Team
551 Spectrum of Blue Straggler Star in 47 Tuc
A star's light yields clues about its identity which are not revealed in an image. That's why astronomers use spectrographs to decode the light. A spectrograph disperses light into its component colors, providing information on a star's rotation velocity, temperature, and surface gravity. The spectrum above compares a computer-generated spectrum of a blue straggler star with one from the observation of the blue straggler in 47 Tucanae, taken by the Hubble Space Telescope's Faint Object Spectrograph. The model spectrum predicts the shape and depth of a blue straggler's spectral lines. Based on this comparison, the Hubble telescope observation clearly matches the model. The Hubble spectrum was taken on Oct. 27, 1995.
Credits: R. Saffer (Villanova University) and NASA
2882 Pluto's Satellite System
This illustration shows the relative orbits of Pluto's moons: Charon, Nix, P4, and Hydra. The orbits are nearly circular and tilted to our line of sight, so they appear elongated.
Credits: NASA, ESA, and A. Feild (STScI)
1729 The Pluto system on June 14, 2002
A careful search of Hubble images taken with the ACS/HRC on June 14th, 2002, reveals two objects that are consistent with the expected locations of the newly-discovered satellites. One image (top) was taken in yellow light (555 nm) and the other (bottom) was taken in blue light (475 nm). The ellipse shows the orbital path of the new satellites derived from the May 2005 Hubble observations. The satellites should lie somewhere along this ellipse and, indeed, there are two objects along the predicted path, thus confirming the 2005 observations.
Credits: NASA, ESA, and M. Buie (Lowell Observatory)
4201 Webb's Orbit
Webb will orbit at the Second Sun-Earth Lagrange Point (L2), where gravity will keep it in a fixed orbit.
Credits: NASA and STScI
1641 Light Echoes From Red Supergiant Star V838 Monocerotis - October 2004
Credits: NASA, ESA and H.E. Bond (STScI)
3472 2014 Hubble WFC3/IR Image of M16 (Cropped)
This NASA Hubble Space Telescope image, taken in near-infrared light, transforms the pillars into eerie, wispy silhouettes, which are seen against a background of myriad stars. The near-infrared light can penetrate much of the gas and dust, revealing stars behind the nebula as well as hidden away inside the pillars. Some of the gas and dust clouds are so dense that even the near-infrared light cannot penetrate them. New stars embedded in the tops of the pillars, however, are apparent as bright sources that are unseen in the visible image. The ghostly bluish haze around the dense edges of the pillars is material getting heated up by the intense ultraviolet radiation from a cluster of young, massive stars and evaporating away into space. The stellar grouping is above the pillars and cannot be seen in the image. At the top edge of the left-hand pillar, a gaseous fragment has been heated up and is flying away from the structure, underscoring the violent nature of star-forming regions. Astronomers used filters that isolate the light from newly formed stars, which are invisible in the visible-light image. At these wavelengths, astronomers are seeing through the pillars and even through the back wall of the nebula cavity and can see the next generations of stars just as they're starting to emerge from their formative nursery.
Credits: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
547 Milky Way/Andromeda Collision (Phase 5)
Credits: Artwork by: James Gitlin
520 Mars After the Mars Global Surveyor's Arrival
[RIGHT] This NASA Hubble Space Telescope picture of Mars was taken on Sept. 12, one day after the arrival of the Mars Global Surveyor (MGS) spacecraft and only five hours before the beginning of autumn in the Martian northern hemisphere. (Mars is tilted on its axis like Earth, so it has similar seasonal changes, including an autumnal equinox when the Sun crosses Mars' equator from the northern to the southern hemisphere). This Hubble picture was taken in support of the MGS mission. Hubble is monitoring the Martian weather conditions during the early phases of MGS aerobraking; in particular, the detection of large dust storms are important inputs into the atmospheric models used by the MGS mission to plan aerobraking operations. Though a dusty haze fills the giant Hellas impact basin south of the dark fin-shaped feature Syrtis Major, the dust appears to be localized within Hellas. Unless the region covered expands significantly, the dust will not be of concern for MGS aerobraking. Other early signs of seasonal transitions on Mars are apparent in the Hubble picture. The northern polar ice cap is blanketed under a polar hood of clouds that typically start forming in late northern summer. As fall progresses, sunlight will dwindle in the north polar region and the seasonal polar cap of frozen carbon dioxide will start condensing onto the surface under these clouds. Hubble observations will continue until October 13, as MGS carefully uses the drag of the Martian atmosphere to circularize its orbit about the Red Planet. After mid-October, Mars will be too close to the Sun, in angular separation, for Hubble to safely view. The image is a composite of three separately filtered colored images taken with the Wide Field Planetary Camera 2 (WFPC2). Resolution is 35 miles (57 kilometers) per pixel (picture element). The Pathfinder landing site near Ares Valles is about 2200 miles (3600 kilometers) west of the center of this image, so was not visible during this observation. Mars was 158 million miles (255 million kilometers) from Earth at the time. [LEFT] An image of this region of Mars, taken in June 1997, is shown for comparison. The Hellas basin is filled with bright clouds and/or surface frost. More water ice clouds are visible across the planet than in the Sept. image, reflecting the effects of the changing season. Mars appears larger because it was 44 million miles (77 million kilometers) closer to Earth than in the September image.
Credits: Phil James (Univ. Toledo), Steve Lee (Univ. Colorado), and NASA
4527 Hubble at the Close of Servicing Mission 3A (1999)
Hubble floats gracefully above the blue Earth after release from Discovery’s robot arm at the close of another successful servicing mission, SM3A (STS-103) on December 27,1999.
2620 WFPC2 Image of Eta Carinae
WFPC2 image of the variable star Eta Carinae
Credits: NASA, ESA, and the Hubble SM4 ERO Team
2254 NGC 1132 - Chandra X-Ray Observatory/Hubble Space Telescope
This image of the elliptical galaxy NGC 1132 combines an image from NASA's Chandra X-Ray Observatory obtained in 2004 with images from the Hubble Space Telescope made in 2005 and 2006 in green and near-infrared light. The blue/purple in the image is the X-ray glow from hot, diffuse gas. The giant foreground galaxy, numerous dwarf galaxies in its neighborhood, and many much more distant galaxies in the background are seen in visible light.
Credits: NASA, ESA, M. West (ESO, Chile), and CXC/Penn State University/G. Garmire, et al.
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