Catching Stardust

Natalie Starkey, 2018 532.2 Starkey CedarMill

Mostly popsci.

Chapter 8 about the ESA Rosetta spaceraft toJupiter-family comet 67P/Churyumov–Gerasimenko is interesting. Black surface temperature 205 to 230 Kelvin, MIRO microwave imager measured 30 to 160 Kelvin subsurface ice temperatures. Comet heterogeneous, materials from different parts of the solar nebula.

Meter scale Philae lander bounced off intended landing spot at "Agilkia" site, came down in unknown location designated "Abydos". The bounces mistimed experiments; still, useful results from the Cometary Sampling and Composition (COSAC) and 5 kg mass spectrometer (Ptolemy) instruments. planneCOSAC sampled the surface, Ptolemy sampled gases 1 meter above, interesting differences.

Comet sheds about a meter every perhelion. Instruments GIADA and COSIMA measured "compact" and "fluffy" dust particles, the compact particles reprocessed by inner solar system and the fluffy particles predating the solar system.

September 2016, Rosetta controlled descent to surface as comet leaves inner solar system.


67P/C-G From Wikipedia

CatchingStardust (last edited 2018-08-18 21:41:53 by KeithLofstrom)