11.   These may be clues to conditions in the early solar system, when planets were forming.

12.   Those meteorites are igneous rocks, with little silica, and they congealed from molten material during the first billion years after the planet first formed.

13.   It adds to an earlier study that suggested planets were forming about Beta Pictoris.

14.   Now scientists have a hint that planets might really form around pairs of stars.

15.   The finding, if confirmed, would help demonstrate that planets can form even around very old stars.

16.   The satellite promptly began focusing on interstellar gas and dust, the material from which new stars and planets form.

17.   The very beginning, when the planets in the solar system were forming.