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Dietary Connections

Dietary Connections

In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used as energy sources to produce...

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Assessing Hepatic Metabolic Changes During Progressive Colonization of Germ-free Mouse by 1H NMR Spectroscopy

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The detection of eclipses in the pluto-charon system.

R P Binzel, D J Tholen, E F Tedesco

Science (New York, N.Y.)

|June 7, 1985

Summary

This summary is machine-generated.

Eclipses between Pluto and Charon, first detected in 1985, confirm Charon's existence. Observing these rare events will refine understanding of the Pluto-Charon system's physical parameters and composition.

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Area of Science:

Planetary Science
Astronomy
Astrophysics

Background:

The existence of Pluto's satellite, Charon, was confirmed by the detection of mutual eclipses in 1985.
These eclipses occur at regular intervals for a limited period.

Purpose of the Study:

To confirm the existence of Charon.
To enable precise determination of physical parameters for the Pluto-Charon system through eclipse observations.

Main Methods:

Observation of mutual eclipses between Pluto and Charon.
Analysis of light curves during eclipse events.

Main Results:

Confirmation of Charon's existence.
Establishment of a period of frequent eclipses lasting 5-6 years.
Identification of a subsequent 120-year period without eclipses.

Conclusions:

Eclipse observations allow for improved measurements of Pluto and Charon diameters.
Surface albedo distribution on Pluto can be mapped.
Satellite orbit, planet mass, and density can be determined, constraining models of Pluto's bulk composition.