How do we find planets in space?
In 1990, the Hubble
space telescope was launched in LEO (low earth orbit) for the explosions of
stars and planets and remains in operation. Of course, this was not the first
telescope, but it was the largest telescope ever.
Which continues to meet human needs for space experiments
today and will continue to do so for the next few years. The length of
the Hubble telescope is 13.2 meters, and its weight is 11,110 kilograms.
Its weight alone can tell you how big it will be. Of course, it not like the
telescope coins on earth and is different from them. Hubble Telescope is in Leo
earth orbit, but not close enough for us to see it with the naked eye.
The Hubble telescope has played a very important role in all
the planets and stars that man has discovered so far.
How
we find planets?
I have a Question.
How we saw and how do we know about any planet in space,
which is so far Millions of light-years away from us?
You know, Think about this question. If it is millions of
miles away. How is even possible to see them.
The technique is called Transit
photometry.
Now imagine, you are a mile away from a Headlight and a
mosquito goes across the Headlight. You even know that the Headlight is
slightly dim. Because the fact of mosquito goes across the light. So, this is
the phenomenon that works.
When the planet goes in front of the star. It has dim of
the star slightly. By this light effect and also using different types of
equipment and technology we do all of these works.
And in modern technology algorithms are so fast to predict
the position and movement direction of the planets. by observing the effect of
light.
When we find a planet and pointed it in space. What should
we do? After finding the planet. When we
discover any planet in space, it is first necessary to look at it to see if
there is water here or not? When we
discover water on an ant planet, our next question is whether or not there is
oxygen here, because we all know that oxygen is essential for life and that it
also means oxygen. If a planet has water and oxygen, it has a very good chance
of life. And the planet that meets all these characteristics is counted in a
certain term.
The
term is called Habitable zone.
We measure the radiations of the stars and finger out the
zone, in which
“Water would remain
liquid”
That’s the key.
Every scientist knows that water is essential for life. If
such a planet like pluto has no liquid water, there is no possibility of life
there. If we find liquid water there is a high possibility, we find life. There
is no matter where we go in the space.
In the past years,
The Kepler space observatory has found thousands of planets just near the star,
Like in the Habitable zone.
The
theory of Probability of Aliens on other planets.
What do you mean by aliens or for others, it means little
green man to other foreign nationals in their country. Regardless of what it
means to you during this topic. The term alien is going to refer to life on
other planets. The idea of aliens is not new, for many years people have been
talking about the stars and asking them some questions, are we alone?
Although this question has not to be answered we as humans
do know that there is a high probability that aliens exist thanks to the Drake
equation, for those of you who do not follow the science community, The Drake
equation is an equation created in 1961 by Dr. Frank Drake.
The drake equation contains enough variables, to find out
the number of planets which contain alien life. The equation is given below.
N= R. Fp. Ne. Fl. Fi. Fc. L
In this equation, N equals R multiply by Fp multiply by Ne
multiply by Fl multiply by Fi multiply by Fc multiply by L.
N
The N Is stands for the number of civilizations In our
galaxy where Radio wave communication might be possible.
R
The R represents the average rate at which the stars are produced
in our Galaxy.
Fp
The Fp is the fraction of these stars which has planets and
he is the amount of those planets to those planets, which can support life.
Fl
Fl is the fraction of the planets which can support life
which will go on to develop life after.
Fi
Fi is the fraction of planets that developed life well that
life will become intelligent.
Fc
Fc is the fraction of civilization that develops Tech
biology to send signs of their existence into space.
L
L I the length of time it takes for these civilizations to
release science into space. The original estimate of this equation in 1961,
where very hopeful and made the following assumptions there would be about one
star formed per year. One-fifth to one-half of all the stars formed would have
planets, of the stars with planets one to five of them would be able to support
life 100% of these planets would develop life 100% of those planets would you
want to develop intelligent life. 10% to 30% of those planets would be able to
communicate their existence, it would take between 1000 and 100 million years
for those communications to reach earth.
Overall the group of people who calculated this formula,
discovered that is an approximate relationship between the number of
civilizations and the amount of time these civilizations take to send their
signals into space. As a result, these original estimates believed that there
could be around 1100 million planets with life in the galaxies. This original
estimate from 1961 still proves true for this equation to this day.
Now, this original estimate may be interested to you but you
probably want to know that what I think about it first I should start by
explaining why I find alien life so, interesting to me because it is one thing
in which we are nothing about this relates to what I believe is an essential
quality of human nature the desire speak out the unknown we did it. When we
colonize America and when we reacted to the Silk Road, we also did it, when
first sent a man into space.
I see alien life is no different, the other reason as to why
I find aliens interesting is because they have to do with space exploration,
which is something that has always interesting me for as long as I can remember
well that’s my opinion.
Thanks, Terrius.
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