# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/iy5fc6a
Phys_org
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ESA is stockpiling simulated regolith for the ultimate lunar playground
Testing interplanetary landers means putting them in an environment as close to their destination as possible. Mars landers are often tested in the "Mars Yard" at NASA's Jet Propulsion Laboratory in South California, and now ESA is looking to build a similar test bed for the moon. They are mining a material in Greenland known as anorthosite to create the largest lunar test bed yet. ⌘ Read more