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Articles − Astronomy and nature
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Radioactivity, natural
and artificial...
Coronal mass
ejections (CME)...
Fractals objects...
Water on the planet, an
element extraterrestrial...
Witch Head Nebula
or IC 2118...
ISS in low Earth orbit
at 340 km altitude...
Lagrange points,
L1 L2 L3 L4 L5...
And it turns
majestically...
The observable universe,
a notion not intuitive...
The periodic passage
of comets...
The habitable zones of
stars or ecosphere...
Toumai our ancestor,
old 7 million years...
Where does the water
of the planet Earth?
Faraday reasoned
like Einstein...
Another image of the universe, space and time together, the undulations of gravity travel at exactly the speed of light, 299 792 m/s...
Sustainable development,
the living observe us...
500 stars of
the Pleiades...
Superb annular eclipse
January 15, 2010...
Obliquity cause
the seasons...
If the abyssal plains are at 5000 m depth, large oceanic trenches dive even deeper under the sea level, between 9000 and 11000 meters...
Life evolves, sheltered
from glaciations...
Star or planet,
brightness difference...
Cosmic rays and
mutation of species...
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by the Rosetta...
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