About

This image macro seems to be used to directly correlate with "You Can't Explain That" with Neil being about to "Explain that."
The person in the image macro is Neil Tyson. Neil Tyson is best known for being the "man who killed Pluto" after making a significant argument against Pluto being a planet. This led to the International Astronomical Union making a decision which demoted Pluto to a dwarf planet.

Origin

This video starts with the Bill O'Reilly "Tides go in, tides go out" and "You can't explain that!" skits, then Neil Tyson walks in and says "Actually, Stephen, I can." This video was posted on Colbert Nation's website on January 6, 2011.

Reddit beginnings

This image macro has gotten to the front page of Reddit.

The image macro began on the subreddit "Advice Animals."

External References

• Advice Animals subreddit
• Neil Tyson – Knowledgeable Neil – MemeGenerator
• Neil Tyson responds to Bill O'Reilly's 'Tides go in, tide goes out via Wayback Machine'