A group of astronomers surveyed sun-like stars in the Orion nebula open cluster and found that fewer than 10 percent have enough surrounding dust to make Jupiter-sized planets.

• 一组科学家调查了猎户星座星云里类似太阳的恒星，发现低于10%25星球能够有足够的环绕尘埃形成木星规模的行星。