Artist's impression of one of the 'floating planets'

عنوان درس: سیارات تنها

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The researchers claim to have found ten dark gas giants floating at the heart of our Milky Way without any nearby star to illuminate them.

Astronomers have long suspected such rogue planets existed, but this is the first evidence, and the Japanese team believe there could be as many out there as there are stars, a finding likely to shock many.

How they came into being is unclear. One theory is that they may be cast-outs, forgotten worlds ejected from infant solar systems by gravitational forces or interplanetary collisions.

Strictly speaking, the objects aren't even planets, as by definition planets orbit a star or the remains of one. But should the researchers have their calculations right, then strange dark orbs which look very much like planets are out there, far far from any shining star.

Neil Bowdler, BBC News

به کلمات گوش بدهيد

gas giants
سیارات بزرگی که سطح سخت ندارند

rogue
غیرعادی، غیرمتعارف

came into being
تشکیل شد، خلق شد

cast-outs
اشیایی که دور انداخته شده اند

ejected from
از ... بیرون انداخته شد

gravitational forces
نیروهای جاذب

interplanetary collisions
تصادف سیارات

Strictly speaking
دقیق بودن

the remains of
باقیمانده چیزی

orbs
گوی ها