looking for Hermean catenae - linear grooves on the surface - and finding them all over the place. Next step: work out formation mech!
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Emma Fegan
86 posts
Emma Fegan
@ER_Fegan
Planetary Sci PhD student, MSc Plan Sci, MESci Geol. Enthusiastic-but-amateur singer, french horn player and aerial rope/silks/hoop artist. SciFi fan.
Milton Keynes Katılım Ocak 2014
54 Takip Edilen37 Takipçiler
Fletcher @LeighFletcher : different processes in giant planets studied as function of energy input from sun #fermor14
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Fletcher @LeighFletcher : Jupiter's great red spot is shrinking and might not be around much longer #fermor14
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Fletcher @LeighFletcher : Saturn has hexagonal polar vortices! Solar system's "stop sign". Possibly one on Neptune too... #fermor14
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Fletcher @LeighFletcher : ingredients of giant planets - gas giants have 0.5% carbon (in methane) and ice giants have 3-4% carbon #fermor14
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Martins: impact shock waves in comet ice modelled as producing amino acids (Goldman 2010), following up with experiment #fermor14
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Martins: delivery of water and building blocks of life to earth by meteorites? Contain 3-5% carbon and water #fermor14
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Clay: why care about volatiles? Influence physical and chemical properties of planetary materials & formation/change of atmos #fermor14
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Catling: Venus has broken carbonate silicate cycle - no water, so no silicate weathering so volcanic CO2 accumulates #fermor14
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Catling: Archaean Earth atmos was more Titan-like, reducing with HC haze #fermor14
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Catling: exoplanets can lose atmospheres by impacts or thermal escape #fermor14
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Catling: existence of an atmosphere isn't just about size of body. Ganymede and Titan same size but latter has thick atmos #fermor14
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Emma Fegan retweetledi
NASA Goddard climate video showing temperature changes over 1880-2011 ends @EllenStofan 's presentation m.youtube.com/watch?v=EoOrtv… #Fermor14
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Emma Fegan retweetledi
"Climate is a function of processes ocurring all the way from the core to interaction with solar wind." @EllenStofan #Fermor14
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Stofan: rain on Belet, Titan. Surface darkened, then gradually lightened as it dried. Just like home - except it's methane rain! #fermor14
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..and the sooner the better imo! Crater dating is tiring. On the eyes but also with the arguing...
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Stofan: MSL absolute dating of Gale crater surface critical new ability, can now test crater dating results #fermor14
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