送交者: cornbug 于 2005-2-05, 12:46:28:
回答: 组图(1) 由 cornbug 于 2005-2-05, 12:45:04:
An ethane swamp on Titan
Initially astronomers thought that Titan's entire surface may be covered by an ethane ocean. More recent observations in infrared wavelengths suggest otherwise. In this image I'm suggesting that Titan may be host to extremely cold ethane-methane swamps.