I have 1294 first discovery systems from my bubble-Colonia-sagittarius A-bubble trip. Did that with g5'd explo Python, 55ly jump. Lots of jumps and scans/mapping. Really, a lot of that...
At one point I was contemplating rebuy screen as a valid option, couldn't take it any more...
So exploring in Elite, not easy gameplay and not for everybody's taste.
Btw, what's my share in numbers?
Edit :
Just remembered, recently I went out in the black with my alt cmdr in 74ly jump dbx, went in "NE" general direction from Bubble.
Some 5,5k ly away, around 25-30 gameplay hours, i decided to go back, nice discoveries made, screenshoots taken, all that. Few jumps later, on my way back found nice moon with good selenium. Collecting mats and taking screenshoots, I'm looking on planet which moon is orbiting, blue with red canyons, landable...
Yes, you're right, you guys know what happened

I'm like I will be careful, and then shields 50%,hull 37%, rebuy...
Back in my home station, like my supposed to be 11k ly round trip never happened.
So exploring, yeah, good times