Public domain
Hourglasses
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
jsc2019e039834 (7/8/2019) --- A preflight view of the Hourglasses on a tabletop. The Hourglass investigation examines the relationship between gravity and the behavior of granular materials such as regolith that covers the surface of planets and planetary-like bodies. Researchers observe various granular materials inside an hourglass and a measuring cylinder under different gravity conditions.
NASA Image and Video Library’s own descriptionCredit lineHourglasses. NASA/JSC, 2019-07-08. Public domain. ID: jsc2019e039834.
