Dr. Kathleen Morse poses this question to high school students across the U.S. as part of the CASIS and NASA sponsored Digital Learning Network program.

During the chat, ask Dr. Morse your question by sending it via email todlinfochannel@gmail.com or tweet the question with #askDLN.

The hourlong event will be webcast on the NASA DLiNfo Channel on March 5, 2014, at 2 p.m. EST.

For more information and to view the webcast, visit http://dln.nasa.gov.