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Definitions from the Web

Solar System Words that Begin with H

1. Heliosphere

Noun: The region of space surrounding the sun where the solar wind is dominant.

Sample Sentence: The Voyager spacecraft ventured beyond the boundaries of the heliosphere into interstellar space.

2. Heliocentric

Adjective: Relating to or measured from the center of the sun.

Sample Sentence: The heliocentric model of the solar system places the sun at its center.

3. Hypervelocity

Noun: The extremely high speed at which an object, such as a meteoroid, travels through space.

Sample Sentence: Hypervelocity impacts can result in the release of immense energy within the solar system.

4. Heliopause

Noun: The boundary or outer limits of the heliosphere, where the solar wind meets the interstellar medium.

Sample Sentence: Voyager 2 crossed the heliopause, marking its entry into interstellar space beyond the influence of the solar wind.

5. Helium

Noun: A chemical element, symbol He, found in abundance in the sun and used to fuel many types of spacecraft.

Sample Sentence: Helium is essential for the operation of the sun and is also utilized as a coolant in certain space systems.

6. Hubble Space Telescope

Noun: A powerful space telescope launched by NASA in 1990, named after astronomer Edwin Hubble, which has provided numerous insights into the solar system and beyond.

Sample Sentence: The Hubble Space Telescope has captured stunning images of distant celestial objects, shedding light on the vastness of the solar system.