Scientists in Germany analyzed data provided by Pioneer 11-10 and identified the reality of a disk of dust and gas in which the process of forming a new star system is now taking place
Dr. Noah Brosh
This is the dust disk around the star "in the Pictoris chamber"
The human race has long debated the question: "Is there a chance to find intelligent life in the universe - that is, away from Earth?
There is still no answer to this, because not all the possible variables in the formula
which should provide a positive response, are known today. to estimate the number
The civilizations found, perhaps in the "Milky Way", our galaxy - should
To know, for example, what is the probability of a certain star having a system of planets
Around him.
About the studies dealing with the search for planets, around other stars
(which are used by the sun), quite a bit is written in this section. But now there is also evidence
that our solar system is similar, from an observational point of view, to other systems around
other stars.
According to the scenario of the formation of a planetary system, which is currently accepted in battle
The scientists, the planets are formed from a huge disk of gas and cosmic dust.
The rotating disk contracts during the rotation and the sun is formed in its center.
Residues from that nebula of gas and dust, form at a later stage the
The planets and other small bodies in the emerging new system.
In recent years, disks of gas and dust have been found around several stars. It
The sign, that in these places in the depths of the universe, a formation process is now taking place
of the planetary system. In billions of years, it is possible that the descendants of the species
Humans will then be able to find planets in those systems that are now forming
similar to those of our solar system.
German scientists recently found evidence of the existence of a dust ring in the system
Our sun, beyond the orbit of the planet Saturn. This is not a dust ring
Original containing material that has kept its shape since the formation of the solar system
our. But the discovery promises a new way to identify other solar systems,
by observing what is done in far infrared light.
The discovery is circumstantial - deduced from an analysis of data collected by the spacecraft
Pioneer 10 and 11
In the 1970s they were pioneers in the study of the distant solar system. in equipment
Their science also included a dust detector.
A grain of dust in space may collide with a high speed spacecraft, due to the speed
The relative between the grain and the spacecraft. In such a collision, the grain and a tiny part
The spaceship turns into vapor-plasma. The impact rate, measured by the detector,
which consisted of metal cells filled with gas; Every impact of a dust particle, opened a cell
certain and allowed the gas to escape from it Measurements of the two spacecraft showed
Beyond the orbit of the planet Saturn, there is a belt of dust.
The dust grains, which are between 6-0.01 mm in size, are probably ejected from comets.
These are unable to emit matter, when outside Saturn's orbit
, because the heating from the sun, which is responsible for the activity of comets, is too small.
The possible source of this external dust is the collisions between the ice blocks,
which are plowing in the outer part of the solar system, in the area of the machine space
"Kuiper Belt".
When dust grains are ejected there, their slight heating by solar radiation causes them
emit infrared radiation. From this, the scientists concluded, that it is possible that the mother will be found
This radiation, which is characteristic of relatively cold bodies, in the vicinity of stars that are not
Young people - this will be a hint that around these stars, in the "Kuiper belt" of
The ice bodies, a system of planets should also be found.
In this way, measurements made more than 15 years ago are now used as a tool
for finding planets around other stars.
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