Researchers said they have found why some orbits seen in young solar systems seem to be more popular than others.

Scientists have found that some of the oldest objects in the solar system formed far away from our sun and then later fell back into the mid-plane of the solar system.

Scientists have performed a micro-probe analysis of the core and outer layers of a pea-sized piece of a meteorite some 4.57 billion years old to reconstruct the history of its formation, providing the first evidence that dust particles like this one experienced wildly varying environments during the planet-forming years of our solar system.

HOUSTON, March 3, 2011 /PRNewswire-USNewswire/ -- NASA research on a meteorite has provided new evidence that the inner planets formed from materials spread far and wide in the early solar system, and not just from nearby matter. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Oxygen isotopic measurements in the core and outer rim of a calcium-aluminum-rich inclusion contained in the Allende meteorite record the entire range of oxygen isotopic composition previously measured in all solids in the solar system. The research provides the first measurements to show that early forming solids experienced vastly varying environments during the planet-forming period of our solar system.

Astronomers may have found the first object clearing its path in the natal disc surrounding a young star.