Starship Asterisk*

Chris,
The geological record of Proto-Earth is (literally) frozen in meteorites, asteroids and comets.
There's plenty of potential evidence available for open mind.
Find BIF (on Mars, asteroid..) and you have located Photogenic Life!

Chris,
Please don't (on purpose?) forget/omit the BIF evidence: the very first life was oxygen-generating (and consequently CO2-consuming).
Here's a new term applicable to the first life ("proto-life") on any young planet, Earth and Mars included: Photogenic. How's that?

Chris,
With "photosynthesis" I mean here this: "central-sun-UV-radiation-driven-oxygen-gneration-in-primordial-hydrocarbons-and-CO2".
Since such term is a bit clumsy, I simply used photosynthesis. Perhaps you coud suggest a proper - possibly a new - term instead?

There was running water on Mars probably quite recently - maybe still is. See this: https://acrobat.com/#d=goS32GApItpLaosC9AqSDg

neufer, Thank you for the link. The ALH84001 structures are not regarded as fossils based (mainly) on their too small a size. However, here’s a few points to ponder: *Life (on any planet) starts molecular - i.e. exremely small - in size. UV-radiation from the central sun splits elemental bonds in pr...

Referring to Discussion in APOD 2016 Oct 03, the model presented above may be applied in reverse order like this: Find a microfossil in a meteorite (or on an asteroid, comets included), and you have found the representative of first life on pre-collision Proto-Earth. How about finding a microfossil ...

Ann,
Thanks - and congratulations! - for opening your eyes and mind for the very apparent geological evidence: asteroids (comets inluded) derive their origin from Proto-Earth.

The primordial atmosphere of Mars may have resembled that on early Earth: mainly nitrogen and carbon dioxide, and negligible oxygen. Rain waters, acidified by carbonic acid, dissolved metals (ferrous iron included) on land, and rivers carried weathering products to the seas. The high concentration o...

Yes, Galileo was tried, judged, vilified and likely even tortured for being right. Right?
Am I right? Well, in a couple of centuries we'll know for sure. At least I was vilified in my time.

John, Thanks for your kind comment. Someone might consider it quite understandable that an 'untrained geologist' cannot - and consequently refuses to - see apparent geological structures. Someone might call such attitude the 'top of patheticism'. Someone also - once upon a time - said, after being t...

Well, then, Chris, the scientist: How can YOU explain the structure on Itokawa - the one that looks like pillow lava? (no irony, just collegial curiosity)

Fine! Pleased to find a colleague! However, take my friendly advice: start thinking like one.
With astronomers' overcautious attitude science will "never" advance.

OK, Chris, I admit: I'm being a bit provocative on purpose - sorry about that - but it worked. This is not the first - and likely not the last - time a geologist finds it difficult to communicate with astronomer: we lack common language. For example, you explain contact binaries hypotethically, with...

Chris, here's the correct address, Kaarlo.
See Figs. 7 and 8 in http://www.geologinenseura.fi/geologi-l ... Makela.pdf

Chris hi! 1. What's your proof for 67P being contact binary intsead of monolith? How would you explain parallel structures (such as layering and consistently cross-cutting dyke swarms) in and through the lobes and the neck? 2. The Itokawa sample collector grossly failed but succeeded to bring back a...

John, thanks for your comment and the link therein. Now, please consider this, and perhaps revise YOUR opinion. Water - high in deuterium - degassing from 67P does NOT refer to water in today's Earth but to the pre-collision primordial water in Proto-Earth. Nobody knows (that I know;-) what was the ...

Comet nucleus 67P, clearly enough, is not a binary object but a monolith with parallel primary layering in the upper and lower lobes, and the ”neck”. The prevailing rock type, as detected from close-ups, is flow breccia. Feeder dyke swarms almost perpendicuarly crosscut the layering and consistently...