New Mars Forums

I hope to follow it on twitter while I work.

UTC is the same as GMT so, about half-past eleven.

Cheers,

It was a NASA email that called it 'Green Valley'. Should I complain? 

Come on then, Vincent, show us what you're made of. Find / or direct me to an image of the area of the landing ellipse seen from above.

Cheers,

Belinda

Fantastic!

This is Olympus Mons, right?

Do you have any of 'Green Valley'?

Cheers,

Belinda

Not some kind of dust effect?

This was 'looked at' by (British author) John Wyndham in a short story in (about) the 1950s (???); a very long time ago anyway. I don't remember the title but I'm sure someone else in the forum will; I read it in an anthology called 'The Seeds of Time'.

Regards,

Belinda

Tom Kalbfus writes:

I see a plot loose end here. Why would your alien travellers, having come such an immense distance, have gone to the trouble of terraforming Mars when there was an already habitable planet nearby?

Nickname:

It's hypothesised Venus' heat  gets trapped in its upper mantle below a too-slowly cooling lithosphere to the extent that mantle substance eventually loses density leading to a catastrophic overturn of the lithosphere per half billion years in which it sinks below magma escaping from underneath. This is given as an explanation why much of Venus' surface seems to be about the same age.

Nickname:

You mean, all for e.g. asteroidal or Kuiper Belt binary systems are the result of capture?

I think the idea of 'earth 2' is based on there being lots of Sun-type stars each of which will have a 'habitable zone' (where water can be wet) in some of which a planet capable of bearing life might orbit, though (if it does) whether it will actually bear life? - We don't yet know for sure how life gets started from chemistry.

Define 'intelligence'.

Used to be on tv. I loved the vehicles, architecture and VR, if the characters and 'message' were excruciating.

My understanding is it comes from the upper part of the mantle due to partial melting. That the Earth is layered is inferred from seismic waves (S waves don't go through liquid, S waves don't go through the outer core, therefore... etc.) and from the composition of chondritic meteorites which are supposed to be the most unaltered material in the Solar System; heavier stuff (iron etc.) must have sunk to the centre, lighter stuff on the outside.

'course, like the ancient Greek model of the Earth surrounded by a crystal sphere embedded with stars, - the above could be superseded anytime.

It's a nice picture, but let's read your conjecture...

Humans on Mars will be foreign life walking on its surface.

If there is any life on Mars, it's unlikely to be at the surface. The first humans to go will have had plenty of time to decide how to protect it, (not to mention the 30+ years between now and their arrival)

We do it all the time on Earth. People agonise about it but it goes on.

It could be fascinating.

I agree, so be nice to me as well.

I voted quarantine it on Earth. I wld be interested to know how it could be more dangerous than some of the pathogens already being kept in labs not to mention ones out in the field that might mutate.