NASA has reached a significant technological milestone with progress on an experimental form of spacecraft propulsion which utilizes solar radiation. The space agency successfully deployed one of four ...
Susanna Post, the 2021 Arkansas Teacher of the Year, is getting ready for a model sailboat race. Her sailboat has triangular-shaped sails. Can you help her name and classify triangles? Rise and Shine ...
About a year from now, if all goes well, a box about the size of a loaf of bread will pop out of a rocket some 500 miles above Earth. There in the vacuum it will unfurl four triangular sails.
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