Doing the Adrift Expedition Redux (even though I've already done Adrift, I just like doing Expedition), and ran into this at Rendezvous 4, a derelict freighter pretty much crashing into the planet. It apparently tilts gravity, and severely hampers your jump jets. TIL I guess.
I also did the freighter task for free, saving the scanner, so thank to whoever parked a derelict freighter right on top of the rendezvous. Saw lots of other people going into the freighter at the same time, so I think it helped out.
Protip: throw the active scanner in your personal refiner before leaving pulse drive, and leave it there until you're done with the derelict freighter. Boom, recycled scanner :D
Also, if you have a bunch of cash when the expedition is done, the space stations sell them in bulk at a decent price, which is unusual. Take them back into your main save.
Good to do if you’re really grinding them. Also, you can get free ones from the one guy on the anomaly pretty frequently if you ever need one.