Discover and read the best of Twitter Threads about #Enceladus

Most recents (8)

🚀 We are live! Here is the correct streaming link for all of today's discussions and performances, starting with a panel on complex time with David Krakauer, James Gleick, Ted Chiang, and David Wolpert in a few moments (measured linearly...):

"One of the ideas we had with #InterPlanetary was, 'What would it take to make science hedonistic? And instead of telling people to do it, you'd have to tell people to STOP doing it?"

- SFI President David Krakauer sets the tone for this weekend's celebrations
#IPFest Image
David Krakauer: "Do you have a favorite model or metaphor for #time?"

@JamesGleick: "You've already mentioned a river; that's everybody's favorite. Borges said time is a tiger. People talk about it as a thread. We ONLY talk about time in metaphors." Image
Read 141 tweets
"All these worlds are yours. Except Europa. Attempt no landing there." - 2010: Odyssey Two, by A.C. Clarke

Most of you think we'll first discover life outside of Earth on Europa or Enceladus. Let's have a look at these amazing worlds of ice and water! 🧵 Europa. Image: NASA / JPL/ ...
In 1610, Europa, Io, Ganymede and Callisto were discovered almost at the same time by Simon Marius and Galileo Galilei.

We remember the latter better, but those names were selected by Marius. If not for him, we might have been calling them after the Medicis, Galileo's patrons... Galileo's drawings of Jupit...
It wasn't until the Pioneers & Voyagers in the 1970s, though, until we got a closer look at the moon and could marvel at it.

Look at this composite image captured by the Galileo probe. Does anything look strange to you? How does it differ from our Moon?

I'll give you a moment. Europa.
Read 39 tweets
I promised an #Enceladus thread yesterday; it starts here! Let's take a look at this tiny, but all the more interesting icy moon of Saturn! 🪐
Though discovered already in the late 18th century by William Herschel, we had long known extremely little about it. 🔭

That changed with the Voyager flybys! 🛰️
This image was taken by Voyager 2 on August 25, 1981, from about 110,000 km away. It shows cratering, but also bright ice, grooves, some crater-poor areas. That suggested parts of the surface were very young - the tiny moon was active!
Read 49 tweets
#PlanetaryProtection has an enormous impact on interplanetary #astrobiology mission design and execution. Check out the rest of this thread for a few case studies on how it has been implemented over the years!

Image: NASA/JPL-Caltech
During the #Apollo era, it was unknown whether life existed on the Moon. To prevent contamination of the Earth’s biosphere by lunar microbes, both astronauts and the samples they collected were subject to quarantine following return to Earth.

Image: NASA
Following splashdown in the Pacific Ocean, Armstrong, Aldrin, and Collins were transferred to a camper-like mobile quarantine facility. From there, they were transported to Johnson Space Center, where they spent 3 weeks in quarantine.

Images: NASA
Read 11 tweets
Vox populi, vox dei; chcete zůstat u Marsu, inu tak dobrá.

Dnes si proto povíme, jak je to s tím životem na Marsu. Je tam, není tam? A pokud jo, proč ho před vámi tajíme? To všechno se dozvíte, tak to rychle sdílejte, než nám to Jack smaže.

Začněme zase pěkně ze široka.

Přemýšleli jste někdy o tom, proč tak bažíme jako lidstvo zrovna po výzkumu Marsu?

Se nad tím zamyslete. Máme 8 planet, mrak zajímavých měsíců (třeba #Enceladus, že zdravím @dav_je) a faaakt hodně asteroidů. Tak proč zrovna Mars tak táhne?
O existenci Marsu víme od první chvíle, kdy naši prapraprapraprapraprapra máti žijící v severní Botwsaně napadlo se podívat na noční oblohu a zadívat se na ty mihotající se špendlíky. Jeden z nich byl přitom jiný - načervenalý - byl to Mars…
Read 58 tweets
bugün 15 temmuz. henüz yuksek lisans ogrencisiyken 1967 senesinde ilk defa bir pulsardan (crab nebula merkezi) yayilan radyo dalgalarini kesfeden jocelyn bell hanimefendi’nin dogum gunu.
lakin 1974 senesinde fizik nobelini, bu kizcagizin tez danismani anthony hewish alacaktir..
15 temmuz tarihi baska acidan da onemli. 2011 senesinde dawn probu Vesta’nin yorungesine girmisti..
yine 15 temmuz 2005 senesinde saturn’un cosmozlar guzeli uydusu #Enceladus yuzeyindeki nefis oluklarin 175km mesafeden Cassini Huygens probu gozlemlemis ve fotograflarini cekmisti..

bu serit oluklari (tiger strips) epeyi nesretmistik..

Read 4 tweets
T-6 days until @CassiniSaturn burns up in the upper atmosphere of #Saturn. It's has flown for 13 years, and will take pics to #GrandFinale
I'll be highlighting my fav images from @CassiniSaturn over the next week in anticipation of the #GrandFinale on Sept 15. Starting with...
1/ @CassiniSaturn launched aboard a Titan IVB/Centaur in a spectacular night-time launch. Oct 15, 1997. 7 year trip to #Saturn #Grandfinale
Read 171 tweets

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