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Home Q & A Board Science-Related Homework Help Physics
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symbo symbo
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7 years ago
In a recent survey of stars in the sky, it was found that occasionally a star that is normally of constant brightness will slowly brighten and then fade back to its original brightness again over the space of several weeks. What is believed to be the cause of this change in brightness?
A)   A massive coronal ejection on a star with abnormally strong magnetic fields
B)   The gradual motion of the star through a break or hole between interstellar dust clouds
C)   Microlensing by compact objects such as brown dwarfs passing in front of the star
D)   The “lighthouse beam” of a slowly rotating neutron star companion
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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papachulopapachulo
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7 years ago
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symbo Author
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6 years ago
Very informative, I appreciate the extra effort
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