The Sagittarius Dwarf and its interaction with our own galaxy is real. But notice that none of the scientists quoted makes any statement to the effect that the Sun is part of the Sagittarius Dwarf; they say exactly the opposite: "For only a few percent of its 240 million-year orbit around the Milky Way galaxy does our Solar System pass through the path of Sagittarius debris. ... Remarkably, stars from Sagittarius are now raining down onto our present position in the Milky Way. Stars from an alien galaxy are relatively near us." (My bold.)

The claim that we're part of the Sagittarius Dwarf seems to originate with "Matthew Perkins Erwin ... researcher, technogeek, inventor, and recording artist", who evidently can't read his own references, and who stirs in an amazing quantity of technobabble on global warming, the galactic plane and the Mayan calendar. The signal-to-noise ratio on his blog (linked from the referenced site) is catastrophically low.

Grant Hutchison