The phrase "again discovered" is correct and usable in written English.
It can be used when referring to something that has been found or realized once more after a previous discovery.
Example: "The ancient ruins were again discovered during the excavation of the site."
Alternatives: "rediscovered" or "found again".
We again discovered a significant correlation between ownership and disownership (r = 0.69, p < 0.001).
However, in April 2010, while performing routine electrical work, the sculpture group was once again discovered, virtually in the same state as it was stored decades before.
Dropbox's latest venture was again discovered by users on Product Hunt, the online community that features daily round-ups of the best new products.
The regiment moved forward to occupy a line of observation posts the next day, but again discovered that the Turks had withdrawn.
Furthermore, we again discovered that early-firing origins are very strongly correlated with breakpoints even after a Bonferroni correction in three of the four analyses (see supplementary table S7 [ Supplementary Material online] and Methods).
Or a travel writer again discovers our food, our mountains and our photogenic monks.
"I am certain that many people will again discover the clean sea, unique nature and hospitality of Crimeans".
Soon, she would begin the process over again, discovering in that void a new energy, waiting to be materialized.
When her mother insists that she get an education, the father reluctantly sends her to the village school where she once again discovers the pleasures of social life.
We were finally able to continue when after meeting the brilliant Israeli pianist, Yael Weiss, we are once again discovering fresh wonders in the music we play".
One week before they set off for Crete, in August 2006, Hogan delved into Natasha's computer files again, discovering she had been browsing divorce websites.
