In 2005, a new anime TV series of Ah! My Goddess! (Japanese: ああっ女神さまっ - Aa! Megami-sama!) began airing in Japan, again produced by AIC and distributed in the US by Media Blasters. This version has returned to the manga roots of the series, retelling events much closer to their original form. Though there are minor differences, typically based on what is considered unacceptable for television, this version follows the canon of the manga quite closely. Although only 24 episodes and one recap were aired, the Japanese DVD release had two more bonus episodes that haven't and will not air on TV.
A second season titled Ah! My Goddess: Everyone Has Wings (Japanese: ああっ女神さまっ
それぞれの翼 - Aa! Megami-sama: Sorezore no Tsubasa) had picking up the story on April 6, 2006 from where the series left off in season one.
Director Hiroaki Gohda has already stated that he'd like to be able to cover all of the manga in the TV series, making future seasons beyond the 2nd a likely possibility.
The plot and story of the TV series sticks as close as possible to the manga, however some changes have been made. The order of occurrence of some events has been changed, while other events have been replaced with similar events that borrow concepts from the manga but place them in the context of a new story.
The 1st season of the Ah! My Goddess TV series follows the manga from Keiichi's first meeting with Belldandy up to the "Lord of Terror" ("Terrible Master Urd" in the Dark Horse version) story arc. In general, the 1st season covers the same territory as the manga up to that arc with some minor ommisions. There are also some additions, mostly from later chapters, notably the events of chapter 50 (meet me by the seashore) now occur before the Lord of Terror arc and not after, also a new story involving a womens kart race is inserted that borrows elements from chapter 121 of the manga. Also, events concerning the angels of the two elder goddesses (Belldandy and Urd) are inserted (since the angels themselves make an earlier appearance in the anime).
After the original 24 episode run, 2 bonus episodes based on the "Trials of Morisato" story arc were added to the DVD release.
The 2nd season, while still following the manga, takes a bit more liberty with the events. After a few one-shot episodes, this new season jumps straight into the "Fourth Goddess" story arc, seemingly rearranging the order of the story arcs (this arc came after the "Ninja Master" and "the Devil in Miss Urd" arcs in the manga, but these arcs come after it in the anime). The series also skips the "Welsper" arcs and rewrites some of the later events that feature Welsper.
From
Wikipedia