I have no idea what I'm looking at, but it is neat.

it's putting you in space from the vantage point of earth with the sun conveniently moved out of the way to not be blinded by it.

Uber will one day use this to plot my ride to planet Kepler 23420 1a

Spring for the UberX, fellow passengers can get pretty annoying over the decades.

this is very impressive. what is the term for lining up multiple images at different "zoom" levels like this? is it any way similar to google earth/space.

Pyramid tiling is the general technique used by Google Maps and similar systems to track images as different zoom levels; also similar techniques are used for progressive rendering for example in JPEG 2000.

It's a mosaic, pretty common tool in astrophotography

mosaic does not answer the zooming which was the actual question