Carrie Underwood, All Smiles With Hubby Mike Fisher Spend Fun-Filled Day at Houston's NASA Space Center with Their 2 Sons

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Carrie Underwood visited the NASA Space Center with her husband Mike Fisher

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The couple took their sons, Isaiah, 7, and Jacob, 3, on a tour of the facility

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They learned all about outer space and drove around in moon rovers and space station replicas

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The family can be seen in several Instagram photos taken during the trip

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Including one of them posing inside a space station simulator

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The family can be seen in several Instagram photos taken during the trip, i

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Including one of them posing inside a space station simulator

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Carrie Underwood's son Isaiah is starting to notice that his mom is famous

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The singer shared that he's becoming more aware of his mom's success.

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