Scientists on the hunt for planetary formation fossils reveal unexpected eccentricities in nearby debris disk

Artist’s impression of the billion-year-old Sun-like star, HD 53143, and its highly eccentric debris disk. The star and a second inner disk are shown near the southern foci of the elliptical debris disk. A planet, which scientists assume is shaping the disk through gravitational force, is shown to the north. Debris disks are the fossils … Read more

‘Pressure bumps’ in sun’s protoplanetary disk explaining many solar system features — ScienceDaily

Before the solar system had planets, the sun had rings — bands of dust and gas similar to Saturn’s rings — that likely played a role in Earth’s formation, according to a new study. “In the solar system, something happened to prevent the Earth from growing to become a much larger type of terrestrial planet … Read more