Slashdot Mirror
Pictures of Earth From Mars
11223 writes "Mars Global Surveyor has snapped a picture of Earth from its Mars orbit. This picture, the first of its kind, shows Earth, the Moon, and Jupiter. Earth is visible as a half disc exposing North and South America; apparently the Moon had to be "processed" into the picture."
Whoa, I was gonna try and mirror these images ... but to no avail! The webserver stopped dead during the subscriber preview time. Oh well, here's a BitTorrent link for everything I was able to get before the site went down:
BitTorrent images mirror link
Cyde Weys Musings - Scrutinizing the inscrutable
Space.com has the pictures, and is not (yet) slashdotted.
--
I don't want to rule the world... I just want to be in charge of mayonnaise.
Or maybe this is "another mirror" by the time I finish posting this. The site is getting pounded hard. This is just the JPEG that was linked to, not the entire site.
/. doesn't have any consideration for other sites when they post links.
429319 byte JPEG. It's on a beefy connection, have a blast.
It's really too bad
mirror here.
If you can, mirror it somewhere else, too.
I downloaded the unprocessed images of Earth. The only difference is Earth is colorized, and the moon brightness is enhanced.
..There's a-dooin's a-transpirin'
It can be found here
what about PNG? it should give you an image of comperable size without people lashing about how evil Unisys is.
There is no reasonable defense against an idiot with an agenda
:wq
Pretty kewl to enter the date/time May 8, 9:00Est, navigate to mars and see the rendered view for yourself. Celstia lets you do this, it's a free solar system simulator. Really high-quality too IMHO. It gets the image pretty close. Make Jupiters moons a little brighter, and the earth is too clear, but it's still an educational exersize... but then again what isn't.
M@
Krispy Cream is people
Ahh ... one who hasn't heard of the moon shot conspiracy. Basically, the stars are of much lower magnitude than the celestial bodies being imaged, and therefore they don't show up in this picture. Many have tried to claim that evidence of the vast NASA conspiracy lies in the fact that no stars are to be seen on any of the photos taken by Apollo astronauts. If you've had any exposure to physics (or if you can perform logical deduction on your own) you'd be keen to why this happens the way it does.
-A.M.
Pimpin' all the Karma Hoes!
Why does Jupiter look so big in that picture?
From one of the astronomy programs I have, I was able to get this data for 08-May-2003:
Earth-Mars range: 1.398e8 km
Jupiter-Mars range: 9.438e8 km
Earth radius: 6378.12 km
Jupiter radius: 71492.35 km
So using
size = atan( radius / range )
we obtain apparent sizes from Mars:
Jupiter: 0.0043 deg
Earth: 0.0026 deg
So Jupiter should be almost twice as big, even though it's almost 7 times farther away. One can probably also figure out the magnification based on the image.
Travis
they have NO ammunition. There 'evidence' is caused by the fact they have no understanding of basic photographic principles, and think the the moon is just like the earth.
The Kruger Dunning explains most post on
Yep, bang on about most of the effects that the parent saw being compression artifacts.
Ok, now as to why there are no stars. The Earth recieves a lot more solar radiation than Mars (distance squared). Presume that the albedo (amount reflected) is the same. So you have a lot more photons going into your camera if you take a picture of the Earth from Mars than vv. This means that you can use a shorter exposure and hence less stars will appear. Then do JPEG compression and watch the few point-like stars get smoothed out. Also, we don't know what else has been done to the image. Subsample and point like stars can go.
If you want to hunt around in the depths of an image looking for cool stuff, start off with an unprocessed original.
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