Visible . Frame from a recent video NASA
We live on a huge ball. It rotates around its axis and around the giant hot star, which is located inside the galaxy, located somewhere in the Universe, close to a trillion of the same . Within them the same burning billions of stars and planets. While the universe is constantly expanding and constantly forms new galaxies and star systems. Well then consider that we are the only one ? Here and scientists can't accept the fact that we repeatedly find traces of aliens and continue to invent new ways of searching for extraterrestrial organisms and civilizations. Whatever they may be.
Our planet, once told Stephen Hawking, unremarkable and revolves around an unremarkable star. All the way. In the coming decade, our robotic spacecraft will travel to the satellites of the gas giants — of Jupiter and Saturn. There, in icy worlds they will try to detect traces of life. And it would be good if the organisms found there was no animalcules, as recently happened on the moon.
Despite the fact that we are able to explore the worlds within our Solar system is amazing and makes our species truly special, but we are not able to reach more distant worlds. However, thanks to the efforts of scientists, we know that those worlds in space a lot. More amazing facts about exoplanets read on .
Today called Exoplanets planets outside that orbit other stars. Exoplanets can be very different — from gas giants several times larger than the Jupiter, to ice worlds and planets similar to Mars or Earth. To date, the majority of discovered exoplanets — the gas giants, however, and planets similar to our own are not rare in the vastness of space. Many exoplanets are rotating with such speed that a year for them lasts only a few earth days. In some worlds, you get up in the morning two of the sun, and some are so hot that their surfaces can melt metal.
It is not Surprising that the search today is equivalent to the search for life in the Universe. Previously, scientists focused on the search for planets that are in the so-called Goldilocks zone or the habitable zone. It is optimal to maintain an acceptable temperature (for life), the distance from the planets to the stars. As you can see today, this search has not yet yielded results. Therefore, scientists have come up with something better.
The Researchers switched to the search for exoplanets, which revolve around the cold . Dwarf stars come in different types, with the features inherent in each of them. So, for example yellow dwarfs — it is a small star, and orange dwarfs, on the contrary — are large and have a long life cycle. As it turned out, the dwarf stars are excellent candidates for a new, brilliant way of finding extraterrestrial life.
the photo of the dwarf star
It Was discovered that produced these stars can potentially habitable exoplanets envelop biofluorescence beautiful light. The researchers recently published their findings in the journal Monthly Notices of the Royal Astronomical Society. To discuss this and other discoveries in astronomy can be in .
Cool dwarf stars (or M stars) have a life span of trillions of years and are the most common stars in the observable Universe. Scientists estimate that around 15-66% of all cold dwarf stars planets revolve in the so-called "area of surface liquid water." This is good news for astronomers and astrobiologists, because many of them are not so far from us that makes it possible for future space missions. It is expected that the newly-launched telescope will help to find a suitable candidate exoplanets.
However, the situation is slightly complicated by the fact that M-stars produce a lot of radiation. But radiation is known to harm living organisms. Therefore, in the study, researchers looked at how organisms cope with radiation on Earth. One of the ways is called sunscreen biofluorescence. To prevent damage from radiation, proteins absorb harmful ultraviolet waves and re-emit them as longer and safe.
Panelius knitting (Panellus Stipticus) looks like this
Panellus Stipticus — a remarkable example of an organism that is able to show bioluminescence. This fungus was chosen by scientists for research to create models of the spectra and colors of earth-like planets. If this mechanism is useful for life on our planet, it can also be useful for living organisms in other parts of the Universe, who had to face the sun .
It is Possible to assume that nearby exoplanets with oceans can be inhabited by life forms similar to earth mushrooms, or corals, which use protective biofluorescence. If the surface of this planet is covered with highly efficient fluorescent biosphere, itcan lead to the fact that its brightness increases by two orders of magnitude compared to the analog worlds without such a biosphere.
Thus, by observing the mushrooms on the Ground and the stars within the visible Universe, scientists have invented a new method which should help us to find someone else living in this vast cosmic void. But a new telescope, TESS will be an excellent assistant in this difficult matter. So the hunt for exoplanets orbiting dwarf stars can be considered open. Who do you think lives in other worlds?
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