A mirror, cheaply

Article Abstract:

The function and budget were the prime considerations in the construction of the Hobby-Eberly Telescope (HET). HET can only scan 70% of the sky because the telescope is angled permanently at 35 degrees, but was made possible on a budget of only $13.5 million, 15% the price of fully movable telescopes.

Equipment and supplies, Design and construction, Telescope, Telescopes, Buildings and facilities, Observatories, Astronomical observatories, University of Texas. McDonald Observatory

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Jovian jolt

Article Abstract:

Astronomers predict that the comet Shoemaker-Levy 9 will crash on Jupiter's surface on July 20, 1994, and that it will greatly influence Jupiter's environment. The comet will not be visible because it will land on the dark side of Jupiter.

Research, Forecasts and trends, Jupiter (Planet), Comets, Shoemaker-Levy 9 (Comet), Shoemaker-Levy 9 comet

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No light matter

Article Abstract:

The American Physical Society has issued a warning against the federal government's wasteful policies towards helium resources. The gas is a limited resource found in only several natural gas wells in the US and Canada.

Laws, regulations and rules, Environmental aspects, Conservation of natural resources, Natural resource conservation, Helium

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