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A rendering of the magnetic field lines of the magnetosphere of the Earth. In astronomy and planetary science, a magnetosphere is a region of space surrounding an astronomical object in which charged particles are affected by that object's magnetic field. [1] [2] It is created by a celestial body with an active interior dynamo.
Chabot Space and Science Center has three observatory telescopes, all of which are open to the public on weekends. "Leah" is an 8" refractor telescope built in 1883 by Alvan Clark & Sons and donated by Anthony Chabot. [6] "Rachel" is a 20" refractor telescope (28 ft focal length), commissioned in 1914 from Warner & Swasey, with optics by John ...
According to NASA, Earth's magnetosphere and the Sun's magnetic field are constantly pressed against one another on the dayside of Earth. Approximately every eight minutes, these fields briefly merge, forming a temporary "portal" between the Earth and the Sun through which high-energy particles such as solar wind can flow. The portal takes the ...
Since the discovery of the gas giants, numerous proposed missions have been developed. In February 1969, NASA approved two spacecraft missions under the Pioneer program, managed by Ames Research Center (ARC), to explore Jupiter. In 1970, NASA granted a contract to the TRW Company of Redondo Beach, California, to construct
The magnetosphere of Jupiter is the cavity created in the solar wind by Jupiter's magnetic field.Extending up to seven million kilometers in the Sun's direction and almost to the orbit of Saturn in the opposite direction, Jupiter's magnetosphere is the largest and most powerful of any planetary magnetosphere in the Solar System, and by volume the largest known continuous structure in the Solar ...
[d] This was the first time that a magnetic field had ever been detected on a moon contained within the magnetosphere of its host planet. [212] [213] [214] This discovery led naturally to questions about its origin. The evidence pointed to an iron or iron sulfide core and mantle 400 to 1,300 kilometers (250 to 810 mi) below the surface, encased ...
The first science phase will focus on the magnetic boundary between the Earth and Sun (day side operations) for one and a half years, with the spacecraft formation orbiting the Earth at 2,550 by 70,080 km (1,580 by 43,550 mi). The second science phase will study reconnection in Earth's magnetic tail (night side operations) for half a year ...
It is primarily concerned with the magnetosphere, ionosphere, thermosphere, mesosphere, and upper atmosphere of the Earth and other planets. Heliophysics combines the science of the Sun, corona, heliosphere and geospace, and encompasses a wide variety of astronomical phenomena, including "cosmic rays and particle acceleration, space weather and ...