Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

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11

Can Dragonfly make it to one of Titan's Lakes? tl;dr: Yes! It could be doable in 2-3 years. According to your linked document Dragonfly will use a Multi-mission radioisotope thermoelectric generator or MMRTG: The MMRTG design incorporates PbTe/TAGS thermoelectric couples (from Teledyne Energy Systems), where the TAGS material is a material incorporating ...


6

I'm going to interpret "surface" to mean Saturn's upper atmosphere. It was recently discovered that ring particles are raining down on Saturn. It’s raining on Saturn. Each second, the planet’s rings shed perhaps thousands of pounds of water ice, organic molecules, and other tiny particles into the gas giant’s clouds. This is caused by particles ...


4

To my knowledge no mission has attempted to generate electricity from Titan/Saturn's magnetic fields (or Jupiter's for that matter), a list of missions to-date includes: https://en.wikipedia.org/wiki/Pioneer_11 https://en.wikipedia.org/wiki/Voyager_1 https://en.wikipedia.org/wiki/Voyager_2 https://en.wikipedia.org/wiki/Cassini%E2%80%93Huygens Planned ...


3

I was thinking this same thing myself. I did some cursory research and apparantly there is an unidentified strain of a genus of thermally resistant bacteria, Microbispora, that survived the reentry and crash of the Columbia, as well as a strain of thermophilic bacteria, Thermoanaerobacter siderophilus, placed in basalt disks on the exterior of the Russian ...


3

Depending on your environmental suit, it would probably be much like the Apollo astronauts' mode of choice on the moon. I say "depending on your environmental suit" because the environment at Titan is very different from that on the moon. True, the gravitational acceleration is roughly the same, but a Titan environmental suit wouldn't have to protect ...


2

This article provides estimates of zonal harmonics down to $J_8$ derived from Doppler data in the Juno mission.* Tesseral harmonics are "statistically zero as expected for a fluid planet in equilibrium". The article also compares the zonal harmonics estimates to past estimates from the Pioneer and Voyager missions. The values are reported in Table 2, ...


2

Here are some effective ring parameters. To simplify I'm just using the monopole term GM and not including the "extra gravity" near the planet from the oblateness which is okay since I'm rounding. (see this answer to Equation for orbital period around oblate bodies, based on J2?) ring a T ω a_z/1km Δv/day ...


2

The key to navigation when in Saturn's moon system is Titan. Cassini flew by a vast numbers of targets while barely spending any fuel. This was accomplished by a gravity assist scheme where the key component is successive flybys of Titan for every orbit. Titan is relatively massive, so it can alter your probe's trajectory dramatically. Exactly how it's ...


2

Let's assume you have a suit that can protect you from re-entry, extreme winds that can tear a human up, and extreme pressures and temperatures (Saturn's upper atmosphere has the same pressure of Earth at sea level, imagine how strong the pressure is in the lower atmosphere). Obviously no such suit exists. For the first few moments of the fall, you would be ...


1

As uhoh and Russell Borogove alluded to already, if I add a rotation rate for Saturn since Epoch J2000 for each of the moons, it matches the NASA simulation almost perfectly. Not sure why I need to do this, but it works. So when calculating the MEAN LONGITUDE for the moon, I add the following longitude rate from Saturn: MEAN LONGITUDE = MEAN LONGITUDE - (...


1

Cassini encounters Saturn at such high speed that its rapidly surrounded by plasma “hotter than the Sun”. Nothing living aboard Cassini can get through that without being disassociated into plasma. Eventually, all of Cassini will be consumed by that. Life can be resilient, but it can’t survive being torn apart into bare nuclei and electrons. From NASA: ...


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