1999 (continued)

• 6/30/1999 STScI-1999-27 561. 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)
• 6/10/1999 STScI-1999-23 562. A Butterfly-Shaped "Papillon" Nebula Yields Secrets of Massive Star Birth Here is a Hubble telescope view of a turbulent cauldron of star birth called N159, which is taking place 170,000 light-years away in our satellite galaxy... (More)
• 6/3/1999 STScI-1999-25 563. Magnificent Details in a Dusty Spiral Galaxy The Key Project team used this Hubble telescope view of the magnificent spiral galaxy, NGC 4414, to help calculate the expansion rate of the universe. (More)
• 6/2/1999 STScI-1999-21 564. Hubble Picture Adds to Planet-Making Recipe The Hubble telescope has snapped a nearly face-on view of a swirling disk of dust and gas surrounding a developing star called AB Aurigae. The image, taken in visible... (More)
• 6/1/1999 STScI-1999-20 565. Hubble Snapshot Captures Life Cycle of Stars In this stunning picture of the giant galactic nebula NGC 3603, the Hubble telescope's crisp resolution captures various stages... (More)
• 5/25/1999 STScI-1999-19 566. Hubble Completes Eight-Year Effort to Measure Expanding Universe The Hubble Space Telescope Key Project team today announced that it has completed efforts to measure precise distances to far-flung galaxies, an essential ingredient... (More)
• 5/19/1999 STScI-1999-22 567. 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)
• 5/13/1999 STScI-1999-18 568. Natural Lenses in Space Stretch Hubble's View of the Universe A Hubble telescope survey of the sky has uncovered exotic patterns, rings, arcs, and crosses that are all mirages produced by a gravitational... (More)
• 5/6/1999 STScI-1999-16 569. Internet Voters Get Two Galaxies in One from Hubble Located about 130 million light-years away, NGC 4650A is one of only 100 known polar-ring galaxies. Their unusual disk-ring structure is not yet understood... (More)
• 4/20/1999 STScI-1999-13 570. 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)