Mission scientists plan to retrieve samples from the surface and return them to Earth.
Mission scientists said the hydrogen most likely indicated the presence of water ice.
When all of the data brought back by the expedition is examined, the mission scientists find a recorded message.
Mission Control is described as being a wild place with the mission scientists very happy.
The pictures alone are not expected to yield much new information on the composition of the ring material, mission scientists said.
Even after one day in orbit, mission scientists were extremely pleased with the data returned by the spectrometers.
During a press conference on March 11, 2004, mission scientists presented the first temperature profile of the martian atmosphere ever measured.
They were given informal names by mission scientists.
However, during a press conference on June 3, mission scientist presented pictures that are already forcing them to rethink previous theories.
Mission scientists said they expected Swift to detect and analyze more than 100 gamma ray bursts a year.