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B. The Sun. These pictures could help scientists understand how the star’s magnetic field causes space weather.

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A. Dusty material expelled from Betelgeuse obscured our view of it from Earth.

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Shutterstock

A. Carbon. Most of the stars in the universe will become white dwarfs when they die. Right before these white dwarfs collapse, they shoot out a powerful wind that contains carbon.

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Shutterstock

D. Voyager 2. On January 28, the 43-year-old spacecraft unexpectedly shut down, 11.5 billion miles from Earth. NASA engineers were able to bring the spacecraft back online on February 5.

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Shutterstock

C. A giant magnetic bubble, called a plasmoid. Voyager 2 had flown through a plasmoid on its journey past Uranus. The discovery could help scientists understand how Uranus loses atmospheric material.

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