magnetic bubble
noun
: a tiny movable magnetized cylindrical volume in a thin magnetic material that along with other like volumes can be used to represent a bit of information (as in a computer)
Example Sentences
Recent Examples on the Web Without a magnetic bubble to shield Mars from the sun’s radiation, its atmosphere was blown away like confetti. 
BostonGlobe.com, 23 July 2021 Last year it was discovered that during the mission, the spacecraft also flew through a plasmoid -- a giant magnetic bubble that likely pinched off part of the planet's atmosphere, sending it out into space. Rob Picheta, CNN, 1 Apr. 2021 But Earth’s thick atmosphere and magnetic bubble shield our planet from much incoming radiation, making these streaks of luminescence scarce. Maya Wei-haas, National Geographic, 9 Nov. 2020 This magnetic bubble, called the heliosphere, protects the planets from harmful cosmic radiation jettisoned out in the wake of powerful cosmic events like supernovae. Jennifer Leman, Popular Mechanics, 12 Aug. 2020 But last year, while combing through NASA’s archives, two planetary scientists noticed something earlier analyses had overlooked—a blip in Uranus’s magnetic field as the spacecraft cruised through a magnetic bubble of sorts. Charlie Wood, Popular Science, 30 Mar. 2020 Plenty of them happen on Earth and Mars triggered by upper atmospheric chaos, the action of the solar wind, and kinks in the planets’ magnetic bubbles, among other things. Robin George Andrews, National Geographic, 20 Sep. 2019 However, more powerful solar outbursts can give birth to geomagnetic storms that wreak havoc in Earth’s magnetic bubble, potentially delivering serious damage to the planet’s electrical infrastructure. National Geographic, 18 Mar. 2019 This onslaught damages electronic circuits on satellites, and any astronauts outside of Earth’s magnetic bubble could get a potentially life-threatening dose of radiation. National Geographic, 18 Mar. 2019 See More
BostonGlobe.com, 23 July 2021 Last year it was discovered that during the mission, the spacecraft also flew through a plasmoid -- a giant magnetic bubble that likely pinched off part of the planet's atmosphere, sending it out into space. Rob Picheta, CNN, 1 Apr. 2021 But Earth’s thick atmosphere and magnetic bubble shield our planet from much incoming radiation, making these streaks of luminescence scarce. Maya Wei-haas, National Geographic, 9 Nov. 2020 This magnetic bubble, called the heliosphere, protects the planets from harmful cosmic radiation jettisoned out in the wake of powerful cosmic events like supernovae. Jennifer Leman, Popular Mechanics, 12 Aug. 2020 But last year, while combing through NASA’s archives, two planetary scientists noticed something earlier analyses had overlooked—a blip in Uranus’s magnetic field as the spacecraft cruised through a magnetic bubble of sorts. Charlie Wood, Popular Science, 30 Mar. 2020 Plenty of them happen on Earth and Mars triggered by upper atmospheric chaos, the action of the solar wind, and kinks in the planets’ magnetic bubbles, among other things. Robin George Andrews, National Geographic, 20 Sep. 2019 However, more powerful solar outbursts can give birth to geomagnetic storms that wreak havoc in Earth’s magnetic bubble, potentially delivering serious damage to the planet’s electrical infrastructure. National Geographic, 18 Mar. 2019 This onslaught damages electronic circuits on satellites, and any astronauts outside of Earth’s magnetic bubble could get a potentially life-threatening dose of radiation. National Geographic, 18 Mar. 2019 See More Word History
First Known Use
1969, in the meaning defined above