*** The Official Astronomy & Universe Thread ***

Could have found this.

Mars-001.jpg
 
Mars was once like Earth so maybe!

Also one of the other Seeding of the Earth theories is that a chunk of Martian rock could have been smashed into Earth long ago which helped seed this planet, how cool would that be?
 
I think the universe and all the secrets it holds are amazing. I am not sure where I stand on the whole 'an asteroid came down and populated/seeded our planet' but I am sure that there is life out there somewhere - be pretty arrogant to think we are the only living things in the whole universe.

If we were seeded from another planet and if conditions for life have to be like our own then there is every chance that aliens would look similar to ourselves.
 
The Weather Channel here just did a segment about new evidence of life found on Mars Nov 29 2012. I missed it and I can't find anything about it online (so far). Has anyone else heard anything about this?

edit: I'm not sure if it was an update on what SAM found, or if they were just telling that story again. Maybe it wasn't anything interesting.

edit2: Probably this stuff: http://www.space.com/18626-nasa-mars-rover-secret-discovery-speculation.html . So we won't know anything until after the conference in California on Dec 3.
 
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SourChipmunk said:
The Weather Channel here just did a segment about new evidence of life found on Mars Nov 29 2012. I missed it and I can't find anything about it online (so far). Has anyone else heard anything about this?

edit: I'm not sure if it was an update on what SAM found, or if they were just telling that story again. Maybe it wasn't anything interesting.
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There's been a thread about this:

http://forums.overclockers.co.uk/showthread.php?t=18462585

which was laid to rest by this:

http://www.techradar.com/news/world...discovery-isnt-earthshaking-after-all-1115437
 
mrk said:
Galaxy 13.3 billion light years away pictured: http://www.slate.com/blogs/bad_astr...ly_observed_using_hubble_space_telescope.html

It's hard to imagine that light has had to travel almost the entire distance of the known Universe to reach us!
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I have an odd musing about this when I see pictures of the deepfield or any other long range image.
Something I've always wondered if how much of that galaxies light has actually travelled to us.
Obviously the image looks like a blob because the sensor pixel size is mahoosivee compared to the focus necessary from that distance.
However if we theoretically created a sensor pixel the size of a particle, would it still be a blob of light or detailed??

I just don't understand how something so huge can be focussed onto something so small without all the light particles becomes squished together, and that applies to anything outside our galaxy.
 
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ChroniC said:
I have an odd musing about this when I see pictures of the deepfield or any other long range image.
Something I've always wondered if how much of that galaxies light has actually travelled to us.
Obviously the image looks like a blob because the sensor pixel size is mahoosivee compared to the focus necessary from that distance.
However if we theoretically created a sensor pixel the size of a particle, would it still be a blob of light or detailed??

I just don't understand how something so huge can be focussed onto something so small without all the light particles becomes squished together, and that applies to anything outside our galaxy.
Click to expand...

There would be no blob of light as you could just zoom in on the galaxy and you would see something highly detailed images along the lines of the andromeda galaxy or eagle nebula.
 
valkynaz said:
There would be no blob of light as you could just zoom in on the galaxy and you would see something highly detailed images along the lines of the andromeda galaxy or eagle nebula.
Click to expand...

But how, zooming in would require the ability to distinguish the gaps between the particles. I find this very hard to visualise and explain. Let say trillions and trillions of particles are flying in our direction, and they have come from the top and bottom of the galaxy, so lightyears apart, but at angles so that they are eventually focused onto something the size of a telescope mirror. How can there be any gaps between the particles by the time they reach us. There must imo be a theoretical limitation to telescopes no matter how good their resolution is.
 
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