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Comets do not give off their own light but reflect light from other sources, such as the Sun. Scientists estimate the mass of comets by their brightness: the greater a comet's mass, the more light that comet will reflect. A satellite probe, however, has revealed that the material of which Halley's comet is composed reflects 60 times less light per unit of mass than had been previously thought. The statements above, if true, give the most support to which one of the following? (A) Some comets are composed of material that reflects 60 times more light per unit of mass than the material of which Halley's comet is composed. (B) Previous estimates of the mass of Halley's comet which were based on its brightness were too low. (C) The total amount of light reflected from Halley's comet is less than scientists had previously thought. (D) The reflective properties of the material of which comets are composed vary considerably from comet to comet. (E) Scientists need more information before they can make a good estimate of the mass of Halley's comet.

Step by step solution

01

Understanding the Problem

We need to determine which statement is most supported by the fact that Halley's comet reflects 60 times less light per unit of mass than previously thought. This means the comet is less reflective compared to earlier assumptions.

02

Analyzing the Options

Let's consider each choice: (A) This states there must be other comets reflecting more light than Halley's, but there is no information about other comets provided. (B) Suggests previous mass estimates were too low because they based their calculations on brightness, which is now proven low per mass unit. (C) Claims less total light is reflected than thought, which is not directly supported by the information about reflectivity per mass. (D) Implies variability in reflectivity among comets, while we only know about Halley's comet explicitly. (E) States that more information is needed to estimate mass accurately, a reasonable conclusion but lacks direct support from the information given.

03

Reevaluating Logical Implications

The key information is that Halley's comet reflects much less light than expected for its mass. If mass was underestimated because brightness was used as a metric, adjusting reflectivity understanding would logically increase estimated mass.

04

Selecting the Best Supported Option

Option (B) directly ties the underestimated reflectivity to potentially underestimated mass, thus aligning with the logical implication that mass estimates were too low if brightness was inaccurately correlated to mass.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Logical Reasoning

Logical reasoning is a crucial skill, particularly when dealing with questions like those found in LSAT reasoning sections. The exercise about Halley's comet tests this ability by requiring you to analyze a situation using the given information. Here, you begin by recognizing a statement's implications about light reflection and mass estimation. The pivotal claim is that Halley's comet reflects 60 times less light per unit mass than previously thought. Given this, you must assess different conclusions to determine which is most supported. Logical reasoning involves systematically eliminating unlikely options that don't logically follow from the given premises. In this case, option (B) - that previous mass estimates were too low - logically follows because the estimates were based on brightness, which turns out to be less per unit mass.

Comet Mass Estimation

Estimating a comet's mass is a fascinating example of scientific inquiry involving celestial bodies. Since comets don't emit their own light, scientists historically have estimated their mass indirectly via their brightness. The assumption is: the brighter the comet, the larger its mass. However, reflectivity, or how much light is reflected per unit mass, is a critical factor. The case of Halley's comet, reflecting 60 times less light than expected, illustrates how important it is to understand the reflective properties of materials making up a comet. If the material is less reflective, it may mean the mass has been underestimated. This adjustment is integral to refining mass estimates using indirect observations from space probes like satellites.

Scientific Inquiry

Scientific inquiry is at the heart of solving problems like those posed in LSAT reasoning sections. The Halley's comet problem exemplifies how scientific discoveries can alter our understanding of established concepts. Scientists received new data from a satellite probe, revealing that Halley's comet reflects much less light than expected. This calls into question previous methods of mass estimation based on brightness. Scientific inquiry involves continuously questioning, investigating, and refining models as new information comes to light. It's a dynamic process where hypotheses and theories evolve with each new data set, just as mass estimates must adjust with better reflectivity understanding.

Analytical Skills

Effectively tackling reasoning questions requires sharpening your analytical skills. Such skills allow you to interpret data accurately and make well-supported conclusions under LSAT-like conditions. In the exercise regarding Halley's comet, you're tasked with discerning which conclusion best aligns with the new information about light reflection. By using analytical skills, you must sift through the options and logically connect the dots to arrive at the correct answer. Analyze each option by assessing how the new knowledge impacts previously held beliefs. In this scenario, deeper analysis reveals that earlier assumptions about Halley's comet mass, inferred from its brightness, likely underestimated due to incorrect reflectivity metrics.