Last fall, the Canadian Space Agency asked students to design a simple science experiment that could be performed in space, using items already available aboard the International Space Station. Today, Commander Chris Hadfield
conducted the winner for its designers: two tenth grade students, Kendra Lemke and Meredith Faulkner, in a live feed to their school in Fall River, Nova Scotia. And now, we finally have an answer to the age-old question, What Happens When You Wring Out A Washcloth In Space? [more inside]
posted by zarq
on Apr 18, 2013 -
Expedition 31 Flight Engineer Don Pettit relayed some information about photographic techniques used to achieve the images:
“My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.”
posted by xod
on Jun 14, 2012 -
Croatian software developer and amateur image processor Gordan Ugarković
takes images from NASA's unmanned space probes released to the Planetary Data System
, splices them together and tweaks the colors, sometimes combining higher resolution black and white images with color images, sometimes recreating what the object would look like in natural color (ie, in visible wavelengths, from images taken in multiple wavelengths), sometimes heightening the contrast to bring out detail. (via
) [more inside]
posted by nangar
on May 20, 2011 -
The evolution of Mars imaging from orbit: Mariner 4 (1964)
, Mariner 6
and Mariner 7 (both 1969)
, Mariner 9 (1971)
(all NASA), Mars 5 (1973)
(USSR), Viking 1 (1975)
, Viking 2 (1976)
, Mars Global Surveyor (1996)
, Mars Odyssey (2001)
(NASA), Mars Express (2003)
(ESA), up to this spy-quality shot of an active avalanche
taken by NASA's Mars Reconnaissance Orbiter (2005)
posted by Chinese Jet Pilot
on Mar 5, 2008 -
Ever seen a sonic boom?
A NASA website has daily pictures from a variety of astronomical sources. Today's is a little more down-to-earth; the visual representation of a sonic boom, captured when an F/A-18 Hornet crossed the sound barrier.
posted by dragonmage
on Feb 21, 2001 -
This is an amazing photograph
of what the world looks like at night, from a low orbit. Although this is found in a subdirectory of NASA's Astronomy Picture of the Day
, I'm not sure how to get to this pic by surfing the site, nor do I have any information on what was used to do the photographing. The link was sent to me in an email.
Anybody know the details on this one?
posted by lizardboy
on Jan 2, 2001 -
This reminded me of one of the stupidest things I've ever seen.
Once on vacation in Eastern Oregon, there was a total eclipse of the moon, just like this one. And some people nearby were taking photographs of it.
photographs. The round-trip time to the moon at the speed of light is 3 seconds and I wouldn't even want to calculate the attenuation caused by 320,000 miles of range.
Sometimes it seems as if some people are completely and totally clueless about what they're doing.
posted by Steven Den Beste
on Jul 25, 2000 -