…science the shit out of this…

Once again we braved the crowds and headed out into Cardiff, this time down to the bay area. Rookie mistake number one because it was utterly freezing. Beautiful and my Doctor Who loving heart adores it there but it was very cold. And I swear there were twice as many people in the city as there were on Tuesday.

We met up with some friends, Daniel & Claudia, who Jack and I have known for years. In fact they first introduced us to each other 21 and some years ago. The 5 of us get on like a house on fire – once upon a time, before we met Lucy, there may have been a foursome. It was a lot of fun, we were curious about it, that was that, and we’re still all friends. They live back up in Manchester though so we don’t see them very often – sometimes only a couple of times a year. This year’s been one of those years, it’s only the second time we’ve seen them

We explored some of the Christmas happenings at the Millennium Centre, had a lovely meal overlooking the Bay, ate some amazing steak, I drank a little bit too much wine but we had so much fun. I can’t remember the last time I laughed so hard. We really need to make a more concerted effort to see people next year – not just Dan and Claud but all our friends. It’s hard, everyone’s working but it’s always worth it and today reminded me of that.

I had a little wine-induced nap and now I’m eager and excited to talk about what’s happening on Mars. You have no idea how thrilled I am right now. There is a thing on Mars that was not there before! It’s the first time a robot has picked up an instrument from its deck to place on the surface of another planet! It’s the first seismometer on the surface of another planet.

And this seismometer is an incredible piece of technology. It detects vibrations as small as a hydrogen atom. It’s so sensitive that during testing in Colorado, they had to filter out the Pacific AND Atlantic oceans (& track any time anyone at facility opened a door)

If Mars as much as hiccups, it’ll know!

But wait! Mars doesn’t have plate tectonics, you’re thinking, so why bother with a seismometer? Well, many things produce seismic waves! For Mars, we expect:
cooling contraction
interior heat
impacts
heat flow probe self-hammering

But you know what’s really, really cool? Over the coming months & years we’re going to get data to actually draw scale diagrams of the inside of Mars instead of bluffing. And we’ll know what’s the deal with it’s core. And mantle.

And we’ll know this inside my lifetime.

Right now every drawing of every planetary interior you’ve ever seen except Earth has a fair chunk of us making shit up based on ranges of plausible explanations to fit limited data. But now we’ll have seismic data. That’s a 600lb gorilla of constraining internal structure.

We make a lot of assumptions based on Earth. Yet Earth is clearly the oddball of the solar system with its plate tectonics & all that water, so maybe we shouldn’t use it as our standard for ‘normal’

I’m going to freak the fuck out if it’s gooey. How could it swish around and not generate magnetic fields?! Some cold lil nugget reflecting on a bygone era of fabulous volcanism would fit my mental model much easier.

This whole mission is just fucking astonishingly COOL!

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s