Observation record / NASA 科学动态

NASA’s CASALS Instrument Bridges Gaps in 3D Maps of Earth’s Surface

First seen 10/21, 21:37 · Last observed 10/21, 22:37 · Source data is current

Source excerptFrom orbit, today’s space-based laser instruments measure Earth’s forests and terrain one narrow line at a time.

Why it mattersA first-party publication from NASA 科学动态, useful for checking the original wording of public policies, data or events.

Published 10/21, 20:17

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Publication position history

2 observations

Publication feed in source order. Position changes do not count as heat or momentum.

Currently only 2 real observations. More history is needed.

NASA public information; third-party exceptions

View original observation times and ranks

Observation time (Beijing)	Source position
10/21, 22:37	1
10/21, 21:37	1

Daily aggregate history

日期	Best daily position	Last daily position	Observations
2026-10-21	1	1	2