Thepersonfromearth

 thepersonfromearth was a YouTube channel, existing between 2008 and 2013, not too much is known about it besides its videos that used to exist. The channel had 112 subscribers the same year it was deleted. It is currently unknown why the channel was deleted.

Speculated story
It is thought that this person probably got into astronomy like a lot of us did. The name "thepersonfromearth" indicates was already into astronomy by the time they created their channel. It was around 2008-2009 that star size comparisons became big on YouTube, so they made their own. They decided to make a second version inspired by some of the newer ones that went beyond, and made Size of the Universe II, and Size of the Universe III.

The channel was likely inspired by nixxxon18, judging by the fact that Size of the Universe III (mentioned below), has similarities to nixxxon18's 2009 size comparison.

Videos
14 videos are known to have existed, only one has been found so far. 8 of them are known, the other 6 are not. All videos were likely made with Celestia 1.6.0 and Celestia 1.5.1 ED, Windows Movie Maker, and likely on either Windows XP or Vista. The known videos are as follows:

[["Zoom out in 30 seconds"|"Zoom out in 30 seconds"]]
(Rough guess of title by Aeos)

[["Journey through the Universe"|"Journey through the Universe"]]
(Rough guess of title by Aeos)

Other
A video about Nibiru (According to Joey P.)