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Originally posted by ArMaP
While it is easy to use the solar wind to move away from the Sun, how could they move in other directions?
And if they use a different system and do not rely on the solar wind, then they still have to avoid being pushed away by the solar wind.
As a person with little imagination, I can not see how a hypothetical space creature would move through space.
teslaandlyne (6 seconds ago)
Very large Tesla craft just let out a fast luminous craft. Electricity akin to lightning, that is millions of cycles per second makes the atmosphere navigable and also lights up the gases.
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Trilobite
Trilobites first appear in the fossil record during the Early Cambrian period (540 million years ago)
Name: Eldonia eumorpha
Geological Time: Early Cambrian (~525 million years ago)
Fossil of elusive jellyfish more than 500 million years old
Using recently discovered fossil snapshots found in rocks more than 500 million years old, three University of Kansas scientists have described the oldest definitive jellyfish ever found.
In a paper would be published in PLoS ONE on October 31, the scientists describe four types of cnidarian fossils preserving traits that allow them to be correlation to modern orders and families of jellyfish. The specimens are about 200 million years older than the oldest previously discovered jellyfish fossils.
"Geologists have discovered strange disc-shaped features in slate deposits in California. The features, at Yreka, are between 2 and 7 centimetres across and 2 to 4 millimetres thick; some have centres stained with iron oxides. One geologist, Nancy Lindsley-Griffin of the University of Nebraska, has already dubbed the saucer-shaped features, 'unidentified fossil-like objects.'
"Geologists discoverd the UFOs in bedding planes of the slate, formed from ocean bottom that was deposited between 400 and 600 million years ago. The objects are puzzling because they lack the symmetry that fossils of living organisms usually display. They are also too large to be the droppings of any creature alive at the time, and do not look like concretions, such as agates, formed by natural chemical processes. Lindsley-Griffin says they resemble very tiny bicycle wheels, with a central core and an outer rim, but with most of the spokes missing.'"
Originally posted by ArMaP
reply to post by Extralien
and if that was the case then the first would have been air organism, then they evolved to water organisms and land organism and air organisms again, and I think that is a strange way of "doing things".
Originally posted by Exuberant1
Strange?
Since when has something being strange stopped it from existing?
Strange in the sense that I think that it would be more natural for those beings to evolve directly to aerial life forms first, and the evolution of these life forms would easily move to occupy water and land masses, evolving on those environments.
So, the present day beings that live in the air should be closer to the oldest living creatures on the planet and not the younger.
But having said that I noticed that I do not know any real air creature, all creatures that use the air do not live there their whole life, like we do on land or sea creatures do on sea, I am not aware of any "full-time air creature", to use another strange definition.
Albatrosses travel huge distances with two techniques used by many long-winged seabirds, dynamic soaring and slope soaring. Dynamic soaring enables them to minimise the effort needed by gliding across wave fronts gaining energy from the vertical wind gradient. Slope soaring is more straightforward: the albatross turns to the wind, gaining height, from where it can then glide back down to the sea. Albatross have high glide ratios, around 22:1 to 23:1, meaning that for every metre they drop, they can travel forward 22 metres (72 ft). They are aided in soaring by a shoulder-lock, a sheet of tendon that locks the wing when fully extended, allowing the wing to be kept outstretched without any muscle expenditure, a morphological adaptation they share with the giant petrels.
Albatrosses are so well adapted to this lifestyle that their heart rates while flying are close to their basal heart rate when resting. This efficiency is such that the most energetically demanding aspect of a foraging trip is not the distance covered, but the landings, take-offs and hunting they undertake having found a food source.[16] This efficient long-distance travelling underlies the albatross's success as a long-distance forager, covering great distances and expending little energy looking for patchily distributed food sources. Their adaptation to gliding flight makes them dependent on wind and waves, however, as their long wings are ill-suited to powered flight and most species lack the muscles and energy to undertake sustained flapping flight. Albatrosses in calm seas are forced to rest on the ocean's surface until the wind picks up again.
Albatrosses range over huge areas of ocean and regularly circle the globe.
Originally posted by ArMaP
But having said that I noticed that I do not know any real air creature, all creatures that use the air do not live there their whole life, like we do on land or sea creatures do on sea, I am not aware of any "full-time air creature", to use another strange definition.