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Hubble Discovers New Class of Gravitational Lens for Probing the Structure of the Cosmos
NASA’s Hubble Space Telescope has discovered a new distant class of quadruple, or cross-shaped, gravitational lenses which might eventually provide astronomers with a powerful new “magnifying glass” for probing a variety of characteristics of the universe: the distribution of dark…
Hubble Sees Material Ejected from Comet Hale-Bopp
These Hubble telescope pictures of comet Hale-Bopp show a remarkable “pinwheel” pattern and a blob of free-flying debris near its center. The image at left shows the entire comet; the picture at right is a close-up of the nucleus. The…
Hubble Maps the Asteroid Vesta
These two surface maps of the asteroid Vesta are derived from Hubble telescope images taken between November 28 and December 1, 1994. The pictures show surface details as small as 35 miles across. Vesta is 320 miles in diameter, and…
Hubble Provides the First Images of Saturn’s Aurorae
The Hubble telescope has taken the first picture of bright aurorae at Saturn’s northern and southern poles [top picture]. The picture at the bottom was taken in visible light. Hubble’s far-ultraviolet-light image resolves a luminous, circular band centered on the…
Hubble Sees Thin Disk Around the Star Beta Pictoris
This Hubble telescope image of a portion of a vast dust disk around the star Beta Pictoris [top picture] shows that the disk is thinner than previously thought. Estimates based on the Hubble snapshot place the disk’s thickness as no…
Hubble Discovers Bright New Spot on Io
This pair of images of Jupiter’s volcanic moon Io, taken with the Hubble telescope, shows the surprising emergence of a 200-mile-wide, yellowish-white feature near the center of the moon’s disk [photo on the right]. This represents a more dramatic change…
Hubble Finds Ozone on Jupiter’s Moon Ganymede
Though ozone may be diminishing on Earth, it is being manufactured one-half billion miles away, on Jupiter’s largest satellite, Ganymede. NASA’s Hubbe Space Telescope found ozone’s spectral “fingerprint” during observations of Ganymede made by Keith Noll and colleagues at the…
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