All over the world, spectacular fossils have frequently been found preserved inside solid, roughly spherical rocks called "concretions."
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Fossils: May 2018
Calendar
- 28 May: NASA Advisory Council Human Exploration and Operations Committee Meeting
- 30 May: NASA Advisory Council Meeting
- 6 Jun: International Space Development Conference
- 6 Jun: National Space-Based Positioning, Navigation and Timing Advisory Board Meeting
- 6 Jun: NASA Aerospace Safety Advisory Panel Meeting
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