Wednesday, April 13, 2016

Q&A - 13/4

Question

There have been extinction level events triggered by asteroid hits on the Earth, but it is also known Jupiter with its massive size protected Earth before, pulling asteroids to itself. Are these views contradictory?

No

With the Planet 9 explanation, it all makes sense. Jupiter is massive (in fact some jokingly refer to our solar system as "Jupiter and some debris"), it saved us before, but P9, being a planet itself, can enter deep into the solar system, knocking stuff in the direction of Earth. Jupiter would not be able to run interference against those.

Some more info on the subject: about the periodicity and measurement of extinction events, paper. My notebook that looks at frequencies of extinction events [geek] using the Lomb-Scargle method that computes statistical significance of peaks, rather than direct Fourier Analysis [/geek]. I reverse-engineered the graph here  with image processing to get its raw data (who da man!) and compute the periods of extinction events. The result is this, and periods in this. There is one period of 25 million years, and one for around 70 - dinosaurs were wiped out 66 million years ago during one of these I assume.

News

SpaceX succeeded landing a rocket on a boat.

Excellent

Congrats.

Question

Favorite phone prank?

Bodankadonk by Tracy Morgan. Still unsurpassed.