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Collapse of Puerto Rico's Arecibo observatory 😢
It mapped 🌜& Mars
Helped NASA pick Apollo/viking landing sites
Observed asteroid Bennu 4 NASA to snag a sample from it
Observed fast radio bursts-distribution of galaxies in the universe
Beamed 1st radio message to aliens in 74
It mapped 🌜& Mars
Helped NASA pick Apollo/viking landing sites
Observed asteroid Bennu 4 NASA to snag a sample from it
Observed fast radio bursts-distribution of galaxies in the universe
Beamed 1st radio message to aliens in 74
more about the loss of Arecibo
cnn.com/2020/12/06/us/…
cnn.com/2020/12/06/us/…
Arecibo was also featured in James Bond' Goldeneye dramatic ( by 1995 standards) final scene
A thread: I wanted to give you a sense of what a great telescope she was, so here's my Arecibo radio telescope: a guided tour. First, this is the focus cabin, where the radio waves reflected into. Housed inside were several receivers to gather the waves -> electrical signals. 
Here's a view inside the focus cabin, where we were uncovering one of the receivers and putting it into place to observe hydrogen from our Milky Way.
This is an Australian-made receiver, which had a little stuffed kangaroo on top, holding a little Australian flag.
