•Mostly made of H, He
•Trace amounts of C, N,
O, S
•CH4 present as gas
•NH3, NH4SH, H2O can condense in colder upper regions Þ clouds
•Colors from unknown trace chemicals
•Density
of gas smoothly increases with depth till point where it is indistinguishable from liquid
Þ no real “surface”
•
•At
very high temperatures and pressures hydrogen becomes a “metal” and conducts
electricity
Þ generates magnetic field
•
•