But if the cloud's magnetic field shifted southward _ something that still could happen, scientists say _ its opposing force would, in effect, open a " hole " in the planet's magnetic shield.
22.
Shields include the inexpensive Absorb, which absorbs damage, the Magnetic shield which deflects incoming warheads, and the X-tinguisher which absorbs weapons that make a direct hit and puts them into the target's own inventory.
23.
The scientists are nearly finished picking apart the capsule's mangled inner canister, which housed disks of exotic materials used for 2 1 / 2 years to capture solar atoms outside the Earth's magnetic shield.
24.
The space capsule had been outside the earth's magnetic shield for three years, collecting solar wind particles that could explain how the sun formed an estimated 4.5 billion years ago and what keeps it fueled.
25.
The space capsule has been outside the earth's magnetic shield for three years, collecting solar wind particles that could explain how the sun formed an estimated 4.5 billion years ago and what keeps it fueled.
26.
Other high-permeability nickel iron alloys such as permalloy have similar magnetic properties; mu-metal's advantage is that it is more ductile and workable, allowing it to be easily formed into the thin sheets needed for magnetic shields.
27.
The space capsule has been outside the earth's magnetic shield for three years, collecting solar wind particles that could explain how the sun formed an estimated 4 . 5 billion years ago and what keeps it fueled.
28.
The space capsule had been outside the earth's magnetic shield for three years, collecting solar wind particles that could explain how the sun formed an estimated 4 . 5 billion years ago and what keeps it fueled.
29.
The finding of signs of liquid water once existing on Mars suggests that it once had its own magnetic shield to keep the water in the atmosphere of the planet from being blown into space by solar wind.
30.
"Our magnetic shield takes the brunt of space storms from the sun, but some energy continually slips through its cracks, sometimes enough to cause problems with satellites, radio communications and power systems, " said Harald Frey of the University of California, Berkeley.
