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Wandering planets are born without stars
Scientists call them free-floating planets – it’s a massive celestial wanderers who were freed from the shackles of the original solar system. Or perhaps not. The latest research shows that these rogue planets, it is likely to have formed their own – and these billions.
In fact, scientists have learned about the existence of free-floating planets not so long ago – the planets do not revolve in orbits of the stars.
Late last year, astronomers discovered CFBDSIRJ2149, near free-floating planet we know of. It lies about 100 light-years away and has a mass of 4 to 7 Jupiter. Free planet quite funny: in visible light it gives dull dark red.
And she’s just floating aimlessly through space.
To this day, scholars have suggested that these planets, which, by the way, not much is known to have formed in the existing planetary systems. Just accidentally lost his way and moved away from the parent star (due to the massive gravitational events, for example). Or because the parent star just died. Although we, like, already convinced of the existence of worlds and stars near the deceased.
Recent observations of tiny dark clouds called “globuletty” showed that free-floating planets can be produced independently. It is likely there will soon be the second known method of forming planets, in addition to the theory of the accretion disc.
On the discovery of a group of astronomers reported from Sweden and Finland, overseeing the globulettami in the Rosette Nebula – a massive cloud of dust and gas in the 4600 light-years from us. This nebula is home to hundreds of “tiny” (on space standards) clouds that a diameter of no more than the distance from the Sun to Neptune. Globuletty incredibly dense – a little less dense than 13 Jupiter masses. Obviously, these inclusions of gas and dust are able to give birth to a planet.
Measurements showed that globuletty containing dense cores, theoretically capable of collapse under its own weight. As a result, you know that is born.
Some of these clouds can be characterized as brown dwarfs – the large celestial objects that have nothing to set fire to turn in the sun. Moreover, given the speed of the globulett in the nebula – about 80,000 km / h, some wandering planet should be split.
“We think these little round cloud of dust formed from high gas column, which had been formed the powerful radiation of young stars,” – explains one of the astronomers from the University of Helsinki. – “They fled from the center of the nebula under the pressure of the hot stars at its center.”
Given the fact that the galaxy may be millions of nebulae, this process may be responsible for millions if not billions of wandering planets. Astronomers believe that the moment about 200 billion useless planet swims along the Milky Way .
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Tags: Universe , Milky Way , Planet .
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