34

It appears the answer is "no". Apollo mission reports describe night-time lights from Earth orbit, but sightings at lunar distances are notably absent. For example, The sights in earth orbit were spectacular; even on the dark side, where thunderstorms and fires in Africa captured the crew's attention. The earth-orbit timeline provided sufficient time ...


33

Don Pettit mentioned a an experiment set up with the San Antonio Astronomical Scociety who pointed both spotlights and a blue laser pointer at the ISS, pictured below in a 5-10 second exposure: I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not (with the aperture used). This is a picture from the ground, ...


14

Why around midnight... Because then the sun will be on the exact opposite site of the earth, from the satellites point-of-view. A=Satellite, E=Earth, S=Sun (not to scale ;) ) A-E----------------------S As a geostationary satellite, Himawari 8 is always above the same area, roughly over Indonesia & Papua New Guinea. from n2yo.com ...and during ...


10

Beyond LEO, once you're a few Earth radii away, far enough to see the entire planet, its nightside is a featureless black, at least to conventional cameras, in every one of the dozens of photos at http://www.planetary.org/explore/space-topics/earth/pics-of-earth-by-planetary-spacecraft.html, even the ones that show Earth as only a slim crescent. Edit: As ...


9

This has happened at least once, on March 4, 2012, there was an experiment to do just that. YouTube: ISS FLASH PROJECT (lower your volume first)


6

First, the bad news: from Assessment of the CORONA series of satelliteimagery for landscape archaeology: a case study fromthe Orontes valley, Syria Unfortunately, the mechanics of the IMC were not published in the CORONA documents. The author does, however, demystify the slightly peculiar wording in the wikipedia page: The C’’’ camera had the lower ...


5

Why would there be? The Apollo mission goal was to examine the Moon, not take pretty pictures of Earth. The seminal Earth image was taken by Apollo 8, this turned out to be an important image. But subsequent repeats wouldn't add much value to this. The astronauts had freedom in what they took pictures of, but they had a limited amount of photo magazines ...


4

NICER, on the ISS, uses a combination of passive damping and active control to achieve pointing within 66 arc seconds of the target 99% of the time. As far as I know, no ISS astronomical payload has achieved better pointing than this. The NICER ISS payload consists of an X-ray timing instrument (XTI) as well as supporting hardware that points the XTI at ...


4

An independent calculation. From the ISS, Venus is as bright as the city of Valencia at night. (Other ISS views of Venus had places on Earth that I didn't recognize.) Valencia's metropolis has about 2M people. In the 1970's Earth's biggest megacity, greater Tokyo, had about 23M people. 11.5 times as many, so 11.5 times brighter. (Maybe less because ...


4

It literally eats away at surfaces made of certain materials. It's pretty crazy. According to Space Mission Analysis and Design ("SMAD", 3e, by Wertz and Larson), Atomic oxygen (which I'll call ATOX thanks to user1209304's comment), is "the predominant atmospheric constituent" from 200 to 600km, and is a dominant force above 170km (around which it actually ...


3

Here is another take at estimating the brightness of the city lights as seen from the moon. As a starting point, let us try to estimate how much light is produced by the entire United States at night. (I would guess that this probably accounts for a significant percentage of the total light produced on Earth, and probably actually a majority of the total ...


2

Actually as part of my application Blueturn (http://app.blueturn.earth) which makes interpolated video feed out of EPIC images, I have been following the EPIC feed a lot and I observed that except the memorable Moon transit of July 5th 2016, we don't have other images of the Moon photobombing the Earth. There is a reason for this; the presence of the Moon ...


2

There’s a 2017 federal “Sources Sought” for launch services for TROPICS. The relevant part is: Therefore, 6 to 8 TROPICS CubeSats will be placed in a constellation formation as described in the three scenarios included in the attached document. All of the CubeSats are identical and must be placed into their operational orbit within 60-days (first ...


1

Were there really video tape recorders orbiting the Earth in 1962? Yes! The first was launched in 1960 only two and a half years after Sputnik-1. There were video reel-to-reel tape recorders in the 1960's, even for home or educational use in schools, but they did suffer from degradation and occasional tape-eating if the mechanism was not carefully and ...


1

The BBC News article Satellites to monitor whale strandings from space describes the use of the WordView-2 satellite to image mass standings of whales, and references the recent Open Access (non-paywalled) paper in PLOS ONE Using remote sensing to detect whale strandings in remote areas: The case of sei whales mass mortality in Chilean Patagonia which ...


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