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The position of the Sun would be far to the left in this image. The magnetopause is the abrupt boundary between a magnetosphere and the surrounding plasma. For planetary science, the magnetopause is the boundary between the planet's magnetic field and the solar wind. The location of the magnetopause is determined by the balance between the ...
The magnetopause exists at a distance of several hundred kilometers above Earth's surface. Earth's magnetopause has been compared to a sieve because it allows solar wind particles to enter. Kelvin–Helmholtz instabilities occur when large swirls of plasma travel along the edge of the magnetosphere at a different velocity from the magnetosphere ...
The day-side magnetopause is compressed by solar-wind pressure—the subsolar distance from the center of the Earth is typically 10 Earth radii. On the night side, the solar wind stretches the magnetosphere to form a magnetotail that sometimes extends out to more than 100–200 Earth radii.
As with Earth's magnetosphere, the boundary separating the denser and colder solar wind's plasma from the hotter and less dense one within Jupiter's magnetosphere is called the magnetopause. [6] The distance from the magnetopause to the center of the planet is from 45 to 100 R J (where R J =71,492 km is the radius of Jupiter) at the subsolar ...
The magnetopause distance from the planet's center at the subsolar point [note 1] varies widely from 16 to 27 R s (R s =60,330 km is the equatorial radius of Saturn). [14] [15] The magnetopause's position depends on the pressure exerted by the solar wind, which in turn depends on solar activity.
2) Magnetosheath. 3) Magnetopause. 4) Magnetosphere. 5) Northern tail lobe. 6) Southern tail lobe. 7) Plasmasphere. Earth's magnetic field, predominantly dipolar at its surface, is distorted further out by the solar wind. This is a stream of charged particles leaving the Sun's corona and accelerating to a speed of 200 to 1000 kilometres per second.
The asteroid, known as 2024 PT5, is set to be drawn away from Earth by the powerful pull of the sun on Monday. Called a "mini-moon" of sorts by some, it temporarily entered Earth's orbit on Sept ...
The Rosetta spacecraft followed comet 67P/Churyumov–Gerasimenko from far out in the solar system, at a heliocentric distance of 3.6 AU, in toward perihelion at 1.24 AU, and back out again. This allowed Rosetta to observe the bow shock as it formed when the outgassing increased during the comet's journey toward the Sun.