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"Here on Earth, we find silica deposition in glaciers which are characteristic of melting water," said Briony Horgan, a professor at Purdue University. "On Mars, we can identify similar silica deposits in younger areas, but we can also see older areas which are similar to deep soils from warm climates on Earth. This leads us to believe that on Mars 3 to 4 billion years ago, we had a general slow trend from warm to cold, with periods of thawing and freezing. If this is so, it is important in the search for possible life on Mars."
One new study compares patterns on the surface of Mars made by mineral deposits with similar patterns on Earth in a wide variety of environments in locations including the Oregon Cascades, Hawaii and Iceland. The Earth data was compared to Martian mineral data collected by the Curiosity rover and the NASA CRISM spectrometer, which is currently aboard the Mars Reconnaissance Orbiter circling the planet.
By analyzing these patterns, scientists found evidence that Mars had at least one long period of severe rainstorms and flowing surface water which was followed by temperatures that froze this water.
A team of international scientists, led by Armando Azua-Bustos, have taken to the Atacama to test how microscopic organisms, such as bacteria and fungi, may have been able to use dust to move across vast distances in the desert. Their research, published in the journal Scientific Reports on Thursday, describes the "very simple experiment" they devised to test how these microbes could survive the harsh conditions, like high levels of ultraviolet radiation and extreme aridity, found in the Atacama.
originally posted by: LookingAtMars
One contaminated Mars lander could seed the entire planet, it would seem.
I seen that recent episode of ancient aliens myself, the transperia aspect does chime with me too. But I think there is more to it though.
originally posted by: 727Sky
There have been papers and studies on viruses and bacteria raining down upon earth from dust particles and comets; billions and billions every day so, if that is the case for earth, you can bet your bippie it is happening throughout the solar system and the universe.
Some claim the worst pandemics mankind has experienced probably came from outer space and I must admit their arguments do carry some weight. Also due to a virus's ability to change an animals genetic make-up it is possible that without their effect we would be a different species or extinct all together.. Interesting discussion whether all true or not. youtu.be...