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Galaxy NGC 4881 and the Coma Cluster
This photo mosaic, which shows a field of distant galaxies, is a computer enhanced reproduction of a picture taken 4 March 1994 with the repaired Hubble Space Telescope. It combines 16 exposures of 15 minutes each, taken through two filters…
Hubble Observes the Fire and Fury of a Stellar Birth
NASA’s Hubble Space Telescope has provided a detailed look at the fitful, eruptive, and dynamic processes accompanying the final stages of a star’s “construction.” Images from the orbiting observatory reveal new details that will require further refinement of star formation…
Hubble Views Saturn Ring-Plane Crossing
BACKGROUND INFORMATION: SATURN’S RING PLANE CROSSING Abstract: Saturn’s rings will sweep across the Earth and Sun in 1995 and 1996. Saturn ring plane crossings provide a splendid opportunity to observe Saturn’s faintest rings and smallest satellites. The edge-on viewing geometry…
Hubble Probes the Workings of a Stellar Hydrogen Bomb
Peering into the heart of two recently exploded double-star systems, called cataclysmic variables, NASA’s Hubble Space Telescope has surprised researchers by finding that the white dwarf stars at the heart of the fireworks are cooler than expected and spin more…
Hubble Discovers New Dark Spot on Neptune
The distant, blue-green planet Neptune has again surprised astronomers with the emergence of a new great dark spot in the cloudy planet’s northern hemisphere. The feature was discovered by NASA’s Hubble Space Telescope. Only last June, Hubble images revealed that…
Asteroid or Mini-Planet? Hubble Maps the Ancient Surface of Vesta
NASA’s Hubble Space Telescope images of the asteroid Vesta are providing astronomers with a glimpse of the oldest terrain ever seen in the solar system and a peek into a broken off section of the “mini-planet” that exposes its interior.…
Oxygen-Rich Supernova Remnant in the Large Magellanic Cloud
This is a Hubble telescope image of the tattered debris of a star that exploded 3,000 years ago as a supernova. This supernova remnant, called N132D, lies 169,000 light-years from Earth in the satellite galaxy, the Large Magellanic Cloud. A…
Hubble Views Distant Galaxies through a Cosmic Lens
This Hubble telescope image of a rich cluster of galaxies called Abell 2218 is a spectacular example of gravitational lensing. The arc-like pattern spread across the picture like a spider web is an illusion caused by the cluster’s gravitational field.…
Hubble Tracks Jupiter Storms
The Hubble telescope is following dramatic and rapid changes in Jupiter’s turbulent atmosphere that will be critical for planning observations for the Galileo space probe when it arrives at the giant planet later this year. This Hubble image provides a…
Hubble Data Suggest Galaxies Have Giant Halos
NASA’s Hubble Space Telescope has helped solve a two-decade-old cosmic mystery by showing that mysterious clouds of hydrogen in space may actually be vast halos of gas surrounding galaxies. “This conclusion runs contrary to the longstanding belief that these clouds…
Hubble Monitors Weather on Neighboring Planets
“The weather on Mars: another cool and clear day. Low morning haze will give way to a mostly sunny afternoon with high clouds. The forecast for Venus: hot, overcast, sulfuric acid showers will continue. Air quality is slightly improved as…
Comet Fragment Slams into Jupiter
In July 1994, 21 chunks of comet Shoemaker-Levy 9, which had broken apart a year earlier, slammed into Jupiter. The Hubble telescope recorded this spectacular event. These images, beginning at lower right, chronicle the results of one such collision. Hubble…
Hubble Finds Oxygen Atmosphere on Jupiter’s Moon, Europa
Astronomers using NASA’s Hubble Space Telescope (HST) have identified the presence of an extremely tenuous atmosphere of molecular oxygen around Jupiter’s moon, Europa. This makes Europa the first satellite ever found to have an oxygen atmosphere, and only the third…
Hubble’s Close-Up View of a Shock Wave from a Stellar Explosion
This Hubble telescope image shows a small portion of a nebula called the “Cygnus Loop.” This nebula is an expanding blast wave from a stellar cataclysm, a supernova explosion, which occurred about 15,000 years ago. The supernova blast wave, which…
Hubble Probes the Violent Birth of Stars in Galaxy NGC 253
This Hubble telescope image of the core of the nearest starburst spiral galaxy, NGC 253, reveals violent star formation within a region 1,000 light-years across. Hubble’s sharp vision allows astronomers to see complex structures in the starburst core for the…
Hubble Identifies Huge Clouds of Intergalactic Gas
Astronomers using NASA’s Hubble Space Telescope have discovered evidence that clouds of hydrogen found between galaxies at distances of billions of light-years from Earth are at least ten times larger than previously thought – at least one million light-years in…
Surprising Hubble Images Challenge Quasar Theory
Astronomers report today that new observations from NASA’s Hubble Space Telescope challenge thirty years of scientific theory about quasars, the most energetic objects in the universe. Hubble images show, to the surprise of researchers, that the environment surrounding quasars is…
Hubble Probes the Complex History of a Dying Star
This Hubble telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat’s Eye Nebula.” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high-speed gas, and unusual shock-induced knots of gas.…
Red Dwarf Dynamo Raises Puzzle over Interiors of Lowest Mass Stars
NASA’s Hubble Space Telescope has uncovered surprising evidence that powerful magnetic fields might exist around the lowest mass stars in the universe, which are near the threshold of stellar burning processes. “New theories will have to be developed to explain…
Hubble Views a Starry Ring World Born in a Head-On Collision
A rare and spectacular head-on collision between two galaxies appears in this Hubble telescope picture of the Cartwheel Galaxy, located 500 million light-years from Earth in the constellation Sculptor. The striking ring-like feature is a direct result of a smaller…
Hubble Discovers Powerful Laser Beamed from Chaotic Star
Darth Vader take heart. Astronomers have discovered a powerful ultraviolet laser beam, several times brighter than our Sun, shooting toward Earth from a super-hot “death star.” The observations, made with NASA’s Hubble Space Telescope have identified a gas cloud that…
Hubble Finds One of the Smallest Stars in the Universe
This NASA Hubble Space Telescope picture resolves, for the first time, one of the smallest stars in our Milky Way Galaxy. Called Gliese 623b or Gl623b, the diminutive star (right of center) is ten times less massive than the Sun…
Hubble Observes A New Saturn Storm
This NASA Hubble Space Telescope image of the ringed planet Saturn shows a rare storm that appears as a white arrowhead-shaped feature near the planet’s equator. The storm is generated by an upwelling of warmer air, similar to a terrestrial…
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