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uhoh
uhoh
12:16 AM
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Q: Difference between "mafic floor" and "olivine-bearing floor" in Jezero crater? (Perseverance landing site)

uhoh Figure 3: Main geologic units within Jezero crater shown on a basemap constructed from images from the High Resolution Imaging Science Experiment (HiRISE) camera onboard the Mars Reconnaissance Orbiter (MRO). Blue circle shows the location of the Perseverance rover landing ellipse. From Destin...

mars planetary-science perseverance geology landing-site
 
 
7 hours later…
uhoh
uhoh
7:25 AM
0
Q: Did a boat full of Louis XIV's Jesuits and some Siamese dignitaries plan on seeing a solar eclipse on May 17, 1687

uhohThe interesting Cosmic Elk article Eclipses in Siam (now Thailand) History and Legends says: While the Siamese ambassadors and their entourage were visiting ship yards and armouries and making careful notes of all they saw, preparations were being made for the return journey in October. Uniforms...

astronomy 17th-century france
 

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