this post was submitted on 18 Aug 2023
164 points (97.7% liked)

Asklemmy

43905 readers
1141 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy ๐Ÿ”

If your post meets the following criteria, it's welcome here!

  1. Open-ended question
  2. Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
  3. Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
  4. Not ad nauseam inducing: please make sure it is a question that would be new to most members
  5. An actual topic of discussion

Looking for support?

Looking for a community?

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[โ€“] eezeebee@lemmy.ca 17 points 1 year ago (1 children)

The LANDSAT program. Not exactly new since it's been going for about 50 years, but it's still fascinating and maybe more relevant than ever with concerns about climate change.

We can get different types of data about a landscape from the different parts of the light spectrum. For example, telling coniferous and deciduous trees apart based on how they reflect light. Imagine echolocation on steroids, using light.

https://youtu.be/DGE-N8_LQBo

[โ€“] blindbunny@lemmy.ml 2 points 1 year ago

Thanks for sharing this I always wondered where they got those pictures.