I dont think you read the article yet.
“We think that the solar system came from a single star, and the sun formed on a collapsed supernova core,” Manuel said in statement released recently by the University of Missouri in Rolla, where he teaches.
“The inner planets are made mostly of matter produced in the inner part of that star, and the outer planets of material form the outer layers of stars.”
Collapsed supernova core? Not quite Dr. Manuel. From imagine.gsfc.nasa.gov/docs/science/know_l1/sn_overview.html - 24k - Cached - Similar pages
“After Core Collapse: A Neutron Star, Pulsar, or Black Hole?
A Neutron Star
For the collapsed core left behind, if the mass is less than two to three times that of the Sun, it will either collapse into a neutron star. About 10 miles in diameter, intensely and uniformly hot, and almost perfectly spherical, a neutron star consists of the dead star's stellar core collapsed so tightly together that a teaspoon of matter weighs more than a mountain on Earth. The name “neutron star” comes from the fact matter is compressed so tightly protons and electrons are squeezed together inside atomic nuclei to form neutrons.
A Pulsar
Rapidly spinning neutron stars (possessing powerful magnetic fields are called pulsars if their electromagnetic radiation is detectable from Earth in a regular pulse. The pulsation results from a favorable alignment of the Earth with the star's magnetic field, which is channeled into a tight cone or beam by the star's rapid rotation.....
The spin frequency of pulsars can reach fantastic speeds, spinning hundreds per second, which is to say faster than a kitchen blender. Such pulsars are called millisecond pulsars and they can reach such speeds because they pull matter off of a companion star. The in-falling matter strikes the pulsar and causes it to speed up....
A Black Hole
But what if the core is more massive than about 2.5 times that of the Sun? In that case, the gravitational collapse is so great that a “runaway” collapse occurs. The resulting “object” is certainly the most awesome known: the black hole.”
Collapsed supernova cores don't produce planets according to the scientists who are physicists and astronomers which it seems Dr. Manuel is not.