walking on the moon
Such a feat hasn't been achieved. For all we know, the universe is constantly expanding. We have no idea
Walk on the Moon
It is difficult to determine an exact number of people who have memorized the entire Bible, but it is estimated that only a small percentage of the global population have achieved this feat.
Feat is an accomplishment, something achieved. It means you managed to wash a baby. Hopefully every parent could do so.
Really is a feat!
Presented themselves with Oscars
On 16 May 1998, Bear Grylls achieved his childhood dream climbed to the summit of Mount Everest, 18 months after breaking three vertebrae in a parachuting accident. At 23, he was at the time among the youngest people to have achieved this feat. This is the only time he has been on the mountain.
The closest I can come to an antonym of feat is triviality. A feat is a notable accomplishment (such as a feat of strength) so an accomplishment that is in no way notable could be described as a triviality.
Bartolomeu Dias was the first European to sail around the southern tip of Africa. He achieved this historical feat in 1488.
Drake Feat. Tyga-Dead Clocks
only David Giles ever achieved this feat
Do They Know It's Christmas? 1984, 1989 2004.