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Quote:(Space) Our solar system is passing through a cloud of interstellar material that shouldn't be there, astronomers say. And now the decades-old Voyager spacecraft have helped solved the mystery.
Voyager 1 entered the heliosheath in December 2004. Voyager 2 followed in August 2007. These crossings provided key data for the new study.
Other interstellar clouds might also be magnetized, Opher and colleagues figure. And we could eventually run into some of them.
"Their strong magnetic fields could compress the heliosphere even more than it is compressed now," according to NASA. "Additional compression could allow more cosmic rays to reach the inner solar system, possibly affecting terrestrial climate and the ability of astronauts to travel safely through space."
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Watch the video for an update of where things stand now.