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The roughly spherical volume of space, centered on the sun and extending into the Kuiper belt, that is composed of particles emitted from the sun and forms a bubble that displaces the interstellar medium.


(Astronomy) the region around the sun outside of which the sun's influence is negligible and interstellar space begins


(ˈhi li əˌsfɪər)

the region around the sun over which the effect of the solar wind extends.


The area of space occupied by the Sun’s magnetic field and gases.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.heliosphere - the region inside the heliopause containing the sun and solar system
region, part - the extended spatial location of something; "the farming regions of France"; "religions in all parts of the world"; "regions of outer space"
Milky Way, Milky Way Galaxy, Milky Way System - the galaxy containing the solar system; consists of millions of stars that can be seen as a diffuse band of light stretching across the night sky
solar system - the sun with the celestial bodies that revolve around it in its gravitational field
References in periodicals archive ?
Other satellites include SOHO, the Solar and Heliospheric Observatory, which has been operating for 15 years, observing the chromosphere (a thin outer layer of the Sun's atmosphere) the corona and the transition region between the two.
Other interesting Dashboard widgets include SunPosition, APOD Viewer (for the Astronomy Picture of the Day), and Solar Viewer (for the latest images from the Solar and Heliospheric Observatory).
To probe the inside of a sunspot, the team used an instrument aboard the SOHO (Solar and Heliospheric Observatory) spacecraft that detects ripples on the sun's surface.
Washington, July 24 ( ANI ): A spectacular image captured by ESA/NASA Solar and Heliospheric Observatory, SOHO, shows a light bulb-shaped eruption leaps from the Sun and blasts into space.
On October 10th, less than eight months after the 1,100th comet was found in images obtained by the Solar and Heliospheric Observatory (SOHO) spacecraft, number 1,200 was discovered by a Chinese amateur astronomer.
Images taken by the Solar and Heliospheric Observatory, a NASA-European Space Agency mission, have revealed that the bursts occurred when one solar eruption swallowed another, creating energetic, radio-emitting electrons.
The footage was taken from video that the Solar and Heliospheric Observatory beamed back to Earth and streamed online.
The comet was independently discovered by Robert Matson in California and Michael Mattiazzo in South Australia on publicly available images taken in late June with the SWAN ultraviolet camera aboard SOHO, the Solar and Heliospheric Observatory.
To look at the prominence eruptions toward the poles, Gopalswamy and his team used observations from Japan's Nobeyama Solar Radio Observatory telescopes and the joint ESA/NASA mission the Solar Heliospheric Observatory (SOHO).
It will also complement data from the European-American Solar and Heliospheric
Earlier observations by the Solar and Heliospheric Observatory (SOHO) spacecraft suggest such a mechanism, several solar physicists told SCIENCE NEWS.