Now nearly out of fuel, the Cassini probe orbiting Saturn since late 2004 will enter that planet's atmosphere at around 7:54 US EDT tomorrow morning and descend into the clouds with its non-photographic sensing instruments transmitting back to us in real time. (Note that Saturn is ~70 light minutes away from us.) After a minute or two we'll lose contact with it, and a short time afterwards Cassini will vaporize.
Here's one of the last images Cassini took of Saturn, from early this week:
Cassini has collected so much data during its time that it'll take years, likely decades, to go through all of it.
https://www.nasa.gov/mission_pages/cassini/main/index.html-Dave-