The key finding: cloud particles at the top of the great storm are composed of a mix of three substances: water ice, ammonia ice, and an uncertain third constituent that is possibly ammonium hydrosulfide
It then likely becomes coated with more volatile materials like ammonium hydrosulfide
and ammonia as the temperature decreases with their ascent," Sromovsky adds.
Scientists believe that below the visible cloud tops of ammonia reside layers of ammonium hydrosulfide
and water vapor, but they found only wisps of gases and some evidence of water droplets.
What was encountered was a wispy layer of what appeared to be ammonia clouds, then a mist possibly of ammonium hydrosulfide
, and finally a layer of particles that they said could be helium rain.
Scientists have conjectured that two additional cloud layers, of ammonium hydrosulfide
and water ice, lie directly below, but no one knows for sure.
Because spectra taken by the Hubble Space Telescope appeared to betray the presence of large amounts of sulfur, some researchers have argued that the fragments did burrow deeper--breaching a layer of ammonium hydrosulfide
believed to lie beneath the ammonia clouds (SN: 7/30/94, p.
Beneath this may be a layer of ammonium hydrosulfide
Beneath them, according to models, lies a layer of ammonium hydrosulfide