Halley’s comet was an alien from another star system

Astronomers have modeled the Oort cloud, which is considered as one of the main sources of comets. Studies have shown up to 90% of comets may be visitors from other star systems.

A group of astronomers from Canada, the U.S. and France came to the conclusion that a significant part of comets, including famous comet Halley, are objects from other star systems.

Scientists have modeled the so-called Oort cloud – a sphere of dust and particles of different sizes, down to small asteroids and cometary nuclei that surrounds the Solar system . From the received results follows, that the substance, which is at a considerable distance from the Sun, is not only the remnants of gas and dust disk from which the planets formed, but also partly borrowed from other star systems.

Beyond the orbit of Pluto, the Solar system does not end. Beyond Pluto lies a second belt of asteroids, the Kuiper belt – and he, in turn, is surrounded by a giant sphere of billions of comets. Beyond the Kuiper belt is like heliopause (the area where the stream of charged particles from the Sun collides with mezhzvezdnaya, in a sense, this is the limit of the Solar system) and the Oort cloud.

The extent of clouds, which mostly manifests itself only indirectly (through a telescope to see anything not possible), are impressive. Its radius reaches one svetovolokna – that is, sunlight is needed a year to get to the outer edge of the clouds.

If the Solar system were reduced to such a size that the Earth would be one meter from the Sun (and thus our planet could be viewed only through a good magnifying glass), up to the borders of the Oort cloud would be a hundred miles.

The Oort Cloud

The Oort cloud is regarded by scientists as one of the main sources of comets, but where did they come from in the cloud? According to one version, which is disputed by the authors of the latest research, and the comet cloud were ejected from the Solar system by the gravitational influence of giant planets during its formation. And though it sounds quite convincing, a number of observations indicate that comets in the Oort cloud are too many to confirm the hypothesis of the “exile of Jupiter”.

The Oort cloud has left Halley’s comet and comet Hale-BOPP, the brightest comet of the twentieth century, which called for the Solar neighborhood in 1995.

Conducted by researchers calculations indicate that the Sun’s gravity could capture the comet, which was removed from nearby stars at a very great distance. And not in single cases (single seizures do not prevent astronomers before), and in droves.

Up to 90% of comets from the Oort cloud may be aliens from other star systems. This assessment has become one of the main reasons for publishing articles in scientific journals. As the comet made a certain contribution to the formation of the atmosphere and oceans of the Earth, from the discoveries of scientists in a certain sense can be called “interstellar” and the origin of our biosphere.

Planets of the Solar system for kids
The section presents the planets of the Solar system for kids pictures. You can download it free by clicking on the image. The solar system includes the four smaller inner…

Continue reading →

Comets of the Solar system
A comet is a heavenly body of small dimensions, which consist of ice with flecks of dust and stone fragments. When approaching the sun the ice begins to evaporate, because…

Continue reading →

Halley's comet was an alien from another star system
Astronomers have modeled the Oort cloud, which is considered as one of the main sources of comets. Studies have shown up to 90% of comets may be visitors from other…

Continue reading →