Photo Gallery: Astronaut Tracy Caldwell Dyson visits La Crescenta Elementary

La Crescenta Elementary School students pose with NASA astronaut Tracy Caldwell Dyson after she spoke about her career and time spent in space, at the La Crescenta school on Thursday, January 23, 2014. Caldwell Dyson encouranged the students to stay smart and do what they like to do.

La Crescenta Elementary School students pose with NASA astronaut Tracy Caldwell Dyson after she spoke about her career and time spent in space, at the La Crescenta school on Thursday, January 23, 2014. Caldwell Dyson encouranged the students to stay smart and do what they like to do.  (Raul Roa / Staff Photographer)

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NASA astronaut Tracy Caldwell Dyson told a large group of La Crescenta Elementary students on Thursday what it’s like to be in space, sharing everything from what type of food she ate to how she exercised in zero-gravity.

Photo Gallery: Astronaut Tracy Caldwell Dyson visits La Crescenta Elementary

NASA astronaut Tracy Caldwell Dyson is introduced to La Crescenta Elementary School students before she spoke about her career and time spent in space, at the La Crescenta school on Thursday, January 23, 2014. Caldwell Dyson encouranged the students to stay smart and do what they like to do.   (Raul Roa / Staff Photographer)

Photo Gallery: Astronaut Tracy Caldwell Dyson visits La Crescenta Elementary

La Crescenta Elementary School students listen carefully as NASA astronaut Tracy Caldwell Dyson speaks about her career and time spent in space, at the La Crescenta school on Thursday, January 23, 2014. Caldwell Dyson encouranged the students to stay smart and do what they like to do.  (Raul Roa / Staff Photographer)

Photo Gallery: Astronaut Tracy Caldwell Dyson visits La Crescenta Elementary

La Crescenta Elementary School students line up to give NASA astronaut Tracy Caldwell Dyson a hug after she spoke about her career and time spent in space, at the La Crescenta school on Thursday, January 23, 2014. Caldwell Dyson encouranged the students to stay smart and do what they like to do.   (Raul Roa / Staff Photographer)

Photo Gallery: Astronaut Tracy Caldwell Dyson visits La Crescenta Elementary

La Crescenta Elementary School students llisten to NASA astronaut Tracy Caldwell Dyson as she talks about her career and time spent in space; at the La Crescenta school on Thursday, January 23, 2014. Caldwell Dyson encouranged the students to stay smart and do what they like to do.  (Raul Roa / Staff Photographer)