Definitions for heliosphere
ˈhi li əˌsfɪərhe·lio·spher·e

Princeton's WordNetRate this definition:0.0 / 0 votes

1. heliospherenoun

   the region inside the heliopause containing the sun and solar system

WiktionaryRate this definition:0.0 / 0 votes

1. heliospherenoun

   The region of space where interstellar medium is blown away by solar wind; the boundary, heliopause, is often considered the edge of the Solar System.

WikipediaRate this definition:0.0 / 0 votes

1. Heliosphere

   The heliosphere is the magnetosphere, astrosphere, and outermost atmospheric layer of the Sun. It takes the shape of a vast, bubble-like region of space. In plasma physics terms, it is the cavity formed by the Sun in the surrounding interstellar medium. The "bubble" of the heliosphere is continuously "inflated" by plasma originating from the Sun, known as the solar wind. Outside the heliosphere, this solar plasma gives way to the interstellar plasma permeating the Milky Way. As part of the interplanetary magnetic field, the heliosphere shields the Solar System from significant amounts of cosmic ionizing radiation; uncharged gamma rays are, however, not affected. Its name was likely coined by Alexander J. Dessler, who is credited with the first use of the word in scientific literature in 1967. The scientific study of the heliosphere is heliophysics, which includes space weather and space climate. Flowing unimpeded through the Solar System for billions of kilometres, the solar wind extends far beyond even the region of Pluto, until it encounters the "termination shock", where its motion slows abruptly due to the outside pressure of the interstellar medium. The "heliosheath" is a broad transitional region between the termination shock and the heliosphere's outmost edge, the "heliopause". The overall shape of the heliosphere resembles that of a comet; being roughly spherical on one side, with a long trailing tail opposite, known as "heliotail". Two Voyager program spacecraft explored the outer reaches of the heliosphere, passing through the termination shock and the heliosheath. Voyager 1 encountered heliopause on 25 August 2012, when the spacecraft measured a forty-fold sudden increase in plasma density. Voyager 2 traversed the heliopause on 5 November 2018. Because heliopause marks the boundary between matter originating from the Sun and matter originating from the rest of the galaxy, spacecraft that depart the heliosphere (such as the two Voyagers) are in interstellar space.

ChatGPTRate this definition:0.0 / 0 votes

1. heliosphere

   The heliosphere is a bubble-like region in space dominated by the Sun, comprising solar wind plasma emitted by the Sun. It extends far beyond the orbit of Pluto, acting as a shield against the interstellar medium, mainly the cosmic rays entering the solar system. Its outer boundary is called the heliopause, where the pressure of the interstellar medium roughly equals the solar wind's pressure.

WikidataRate this definition:0.0 / 0 votes

1. Heliosphere

   The heliosphere is a region of space dominated by the Sun, a sort of bubble of charged particles in the space surrounding the Solar System, "blown" into the interstellar medium by the solar wind. Although electrically neutral atoms from the extra-solar volume can penetrate this bubble, virtually all of the material in the heliosphere emanates from the Sun itself. The Sun's Corona is so hot that particles reach escape velocity, streaming outwards at 300 to 800 km/s producing the solar wind. For the first ten billion kilometers of its radius, the solar wind travels at over 1,000,000 km/h. As it begins to interact with the interstellar medium, it slows down before finally ceasing altogether. The point where the solar wind begins to slow is called the termination shock; the solar wind continues to slow as it passes through the heliosheath leading to a boundary called the heliopause where the interstellar medium and solar wind pressures balance. The termination shock was successfully detected by both Voyager 1 in 2004, and Voyager 2 in 2007. As the sun is moving through space it was assumed that beyond the heliopause there might be a bow shock, similar to a bow wave created as a ship passes through water, where the interstellar medium collides with the heliosphere. However, data from the Interstellar Boundary Explorer suggests that the velocity of the Sun through the interstellar medium is too low for a bow shock to form. Also, Cassini and IBEX data challenged the "heliotail" theory in 2009. Voyager data led to a new theory that the heliosheath has "magnetic bubbles" and a stagnation zone.

Matched Categories

1. • Milky Way
   • Region

How to pronounce heliosphere?

1. Alex

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Australian

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   Neerja

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How to say heliosphere in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of heliosphere in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of heliosphere in Pythagorean Numerology is: 3

Examples of heliosphere in a Sentence

1. Garcia Marirrodriga:

   The goal is to really understand the physics of how the sun creates and controls the heliosphere( the area around the sun), and why the solar activity changes over time.

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=heliosphere
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Heliosphere
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Heliosphere
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=heliosphere