(ËvÉr bÉl) adj. 1. of or consisting of words: verbal ability. 2. spoken rather than written; oral: verbal communication. 3. concerned with words only, rather than with the ideas, facts, or realities expressed: a purely verbal distinction. 4. corresponding word for word; verbatim: a verbal translation.
Because their hypothesis requires that Earth arose from water-containing materials already present in the inner solar system, it's called the wet-accretion hypothesis. Most of Earth's water has an indigenous origin, says Drake.
âThe presence of water does not imply life,â explained Luciano Iess. âBut Titan has many interesting ingredients â hydrocarbons, a hydrological cycle and a thick atmosphere.â. The Cassini spacecraft was launched in 1997 and reached Saturn in 2004.