The MOJO videos

One fine week in May, well, I needed some peace
I packed up my bags and I headed to Nice
I went to see Morby, up there on that hill
And we started talking, as scientists will.

Now, Morby and I have been working for ages
We’ve had this sweet project that’s chopped into stages
We wanted the thing to go out with a bang
To make a big splash (or, well, maybe a clang)!

Our project’s called MOJO. It’s been lots of fun
It’s all about planets and how they begun
The agency funding it’s called ANR
We’re awfully grateful, we honestly are.


We’ve had some great people with us. Let me list ’em
They’ve helped us to simulate our Solar System
I’m talking ’bout Andre, Arnaud, and Michiel
Elena, Bert and Seth. They’re the real deal.

So now let me quickly, well, get to the point
See, Morby and I, well, we don’t disappoint
We hired a video team to record us
They picked up their camera and pointed toward us.

Each of us talked about what we’ve discovered
About the ideas that our team has uncovered
All that is new in ol’ planet formation
Like pebble accretion and planet migration.

We studied hot super-Earths: what makes ’em hotter?
And our planet Earth, just how’d it get its water?
And why is it Jupiter’s bigger than Earth?
And why is Mars so much much smaller in girth?

And one final bonus is something quite new-ah
The origins of that thing, Oh-MOO-AH-MOO-AH!  [aka ‘Oumuamua]
The object that came from afar just to visit
That’s not unusual. Really, now, is it?

And now, without any more fuss, let’s deploy ’em
Here are the videos. Hope you enjoy ’em.




13 thoughts on “The MOJO videos

  1. Part ten calls planet formation starting beyond 20 – 30 AU problematic. Is that because the planetesimals would take too long to grow large enough to start accreting pebbles, because there would need to be some reason nothing started forming closer, or something else?

    1. The main idea is that, if planets can form at 20 AU then they should also form closer in. So, how do you end up with systems with outer massive planets and nothing big closer-in (like the SOlar System)? Bitsch et al (2015) needed Jup’s core to start out past 20 AU.

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