It Has Been Estimated That Halley's Comet, Which Has an Orbital

question 29

Short Answer

It has been estimated that Halley's Comet, which has an orbital period of 76 years, has a mass of 100 billion tons. Furthermore, it is estimated to lose about 100 million tons of material when its orbit brings it close to the Sun. The maximum remaining life span of Halley's Comet is ________.

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Definitions:

Developmental Milestones

Specific functional and physical abilities that most children achieve by a certain age, used as indicators of typical child development.

Vocabulary

The set of words known and used by a person in speech and writing.

Private Speech

Verbal communication directed at the self, typical in early childhood, and used for self-guidance and regulation.

Self-Regulation

An individual’s ability to prevent himself or herself from making a dominant, preferred or automatic response in order to perform a nondominant response, such as when a hungry person is served food at a restaurant but waits to eat until everyone at the table has been served.