Latest Harold J. Reitsema Stories

2009-09-09 10:44:00

New Instruments Built by Ball Aerospace Reveal Universe's Best Kept Secrets Images from new instruments on the Hubble Space Telescope, show the sharpest visible-light images of distant galaxies ever seen. Today NASA released early observations from Hubble following installation of the Wide Field Camera (WFC3) and Cosmic Origins Spectrograph (COS). COS and WFC3 are equipped with the most advanced detector capabilities ever flown in space. The new state-of-the-art instruments...

Latest Harold J. Reitsema Reference Libraries

2004-10-19 04:45:41

Planet Proteus -- Proteus is one of Neptune's moons. It is one of the darkest objects in the solar system, as dark as soot; like Saturn's moon Phoebe, it reflects only 6 percent of the sunlight that strikes it. Proteus is about 400 kilometers in diameter, larger than Nereid, but it wasn't discovered from Earth because it is so close to Neptune that it is lost in the glare of reflected sunlight. Proteus is irregularly shaped and shows no sign of any geological modification; scientists...

2004-10-19 04:45:41

Planet Larissa -- Larissa is the fifth of Neptune's known moons. It was discovered by Harold Reitsema based on ground-based stellar occultation observations, and was photographed by Voyager 2 in 1989. Larissa is irregular (non-spherical) in shape and appears to be heavily cratered, with no sign of any geological modification. Little else is known about it. Since its orbit is below Neptune's synchronous orbit radius it is slowly decaying due to tidal forces and will one day break up...

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Word of the Day
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.