In message , Ron Baalke
writes

The Keck Interferometer observations revealed a gap of 18
million miles between DG Tau and its orbiting dust disc.
Akeson notes that of the extra-solar planets - planets
orbiting other stars - discovered so far, roughly one in four
lies within 10 million miles of the parent star. Since
planets are believed to form within a dust disc, either DG
Tau's disc has a larger-than-usual gap, or the close-in
planets form farther from the star and migrate inward.


I don't begin to follow that. Are they saying that three in four lie
more than 10 million miles from their star, like the planets in our
solar system? Then they are in the majority, and DG Tau is normal.
--
"Roads in space for rockets to travel....four-dimensional roads, curving with
relativity"
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