How aliens would see our Earth
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When astronomers on Earth used their telescopes to search for potentially habitable exoplanets, they get a series of different shots. Thanks to the advanced hardware of the telescopes, researchers can find out a huge amount of data about distant celestial bodies. But what if right now , using exactly the same (or similar) technology exploring our planet? As they see it in their alien telescopes?
watching our Land?
For starters, scientists from the laboratory of NASA took about 10,000 images of the Earth taken by NASA satellite Deep Space Climate Observatory (DSCOVR), which was at the point of gravitational balance between the Earth and the Sun. A point of gravitational balance, if you do not go into the details of astronomical calculations, is the point between two celestial bodies, which allows you to constantly see only one side of the object being studied. In this case, DSCOVR is constantly observed only over the day side of the Earth. Images were taken every 1-2 hours in the period from 2016 to 2017.
But, as you know, the distance between the Earth and the Sun is not enough, because the observed exoplanet (in this case ) must be located at a distance of several light years. Otherwise, to understand how I see it is not possible. Therefore, scientists in a few times to reduce the scale of images to simulate a distance of several light years.
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Next, comparing the images with the originals, scientists have identified the parameters that most characterize certain parts of the planet like the seas, oceans and continents. In the end, the final image in General, one can distinguish the silhouettes of Africa, Asia, and North and South America. What do you see in the image below? Please share your opinion in our
We bring you the first of a two-dimensional map of the surface of the Earth as it could be observed from a distance of several light years — say the researchers. The findings will help in further studies on the search for potentially habitable exoplanets.
About our Land would see the aliens if watching her from a distance of several light years.
In fact, in addition to very interesting from the point of view of science experiment, the composition of this image of our Earth will help in further studies. For example, some characteristics and patterns that can be identified between the map and the real world can serve as reference points to search for land, seas and atmosphere on the distant planets. So, in the image, available above, black lines — is a tentative outline of the continent that have similar reality view. That is, having more detailed guidelines. But while this is only speculation.
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