File:PIA12375.jpg
Summary
In this illustration, the multicolored (blue and green) bubble represents the new measurements of the emission of particles known as energetic neutral atoms. The energetic neutral atoms were streaming in from the thick boundary known as the heliosheath. The heliosheath is the region between the heliosphere, the region of our sun's influence, and the interstellar medium, the matter between stars in our galaxy. Areas in red indicate the hottest, most high-pressure regions and purple the coolest, lowest-pressure regions.
The yellow circle is our sun. The two Voyager spacecraft, illustrated with lines showing their path, are currently traveling through the heliosheath. In the heliosheath, the solar wind slows down and heats up as it interacts with the interstellar medium. The image also shows Cassini, which is still inside our solar system, orbiting Saturn. The spacecraft sizes are not to scale.
The dark inner circle represents the volume bounded by the termination shock, formed where supersonic solar wind streaming out from our sun suddenly slows down. The outer circle, known as the heliopause, the outer boundary of the heliosheath, is the place where the interstellar medium and the solar wind are balanced. To the left of this bubble is the curve of the putative bow shock, where the interstellar medium, traveling in the opposite direction against the heliosheath, slows down as it collides with the heliosphere. The bow shock resembles a wave formed in a stream as it flows around a rock.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:19, 6 January 2017 | | 3,019 × 2,031 (303 KB) | 127.0.0.1 (talk) | In this illustration, the multicolored (blue and green) bubble represents the new measurements of the emission of particles known as energetic neutral atoms. The energetic neutral atoms were streaming in from the thick boundary known as the heliosheath. The heliosheath is the region between the heliosphere, the region of our sun's influence, and the interstellar medium, the matter between stars in our galaxy. Areas in red indicate the hottest, most high-pressure regions and purple the coolest, lowest-pressure regions. <p>The yellow circle is our sun. The two Voyager spacecraft, illustrated with lines showing their path, are currently traveling through the heliosheath. In the heliosheath, the solar wind slows down and heats up as it interacts with the interstellar medium. The image also shows Cassini, which is still inside our solar system, orbiting Saturn. The spacecraft sizes are not to scale. </p> The dark inner circle represents the volume bounded by the termination shock, formed where supersonic solar wind streaming out from our sun suddenly slows down. The outer circle, known as the heliopause, the outer boundary of the heliosheath, is the place where the interstellar medium and the solar wind are balanced. To the left of this bubble is the curve of the putative bow shock, where the interstellar medium, traveling in the opposite direction against the heliosheath, slows down as it collides with the heliosphere. The bow shock resembles a wave formed in a stream as it flows around a rock. |
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