Live data from Hacker News

A one-second video taken by the Rosetta probe on the surface of a comet

twitter.com

61–70 of 88 posts

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#61
post #52

The HN title is wrong. This was not taken "on the surface", but from a 13-14 km orbit, according to source ESA data (click on a picture to see its data): https://imagearchives.esac.esa.int/index.php?/category/410/s... Each picture is a 12.5-second exposure. Therefore this 25 fps video is sped up 312.5×

I was trying to figure out if the probe was sliding down a hill or if it was the camera panning.

14km and 312.5x speed up makes it quite surreal if not misleading.

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#62
post #34

Earlier quoted context omitted.

JS is poorly understood in comparison This might be the most hilariously ridiculous true statement I've ever heard.

In javascript: x == x _ is true. Good. x == !x _ is also true. Oops? And guess what: Array(3)==",," _ is also true. But NaN == NaN _ is false. Math.max()>Math.min() _ is also false! but then again Math.max() Madness, I tell you!

Nitpick: NaN is supposed to work like that: the rule is that every comparison of any value against NaN returns false.

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#63
This video is apparently not from the surface, but from several kilometers away:

>> Ross James Walker @rossjwalker96: Is rosetta moving on the surface here? Can't work out how the perspective seems to move to the right?

> Massimo @Rainmaker1973: It's moving, but these images were captured from 13 kilometres away. Rosetta flew even closer during its mission before landing on the surface in September 2016

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#64
post #35

Unfortunately Twitter butchers video quality. I remade both landru79's videos from scratch using original ESA 2048x2048 image sequence (plus I added a bit of motion interpolation): http://alteredqualia.com/tmp/rosetta/rosetta.webm [50MB] http://alteredqualia.com/tmp/rosetta/rosetta_stars.mp4 [28MB] ----- Edit: in case my server doesn't hold up, here are video mirrors on Streamable: https://streamable.com/w2wgj https:…

Dear NASA - Science is amazing. Don't forget to make it relatable by doing work like this! People love to see great images, so you gotta curate them and highlight the stunning stuff like this!

ESA, not NASA!

edit: or are you pointing out that NASA should do this?

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#65
post #34

Earlier quoted context omitted.

JS is poorly understood in comparison This might be the most hilariously ridiculous true statement I've ever heard.

In javascript: x == x _ is true. Good. x == !x _ is also true. Oops? And guess what: Array(3)==",," _ is also true. But NaN == NaN _ is false. Math.max()>Math.min() _ is also false! but then again Math.max() Madness, I tell you!

At least x === x, right?

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#66
post #35

Unfortunately Twitter butchers video quality. I remade both landru79's videos from scratch using original ESA 2048x2048 image sequence (plus I added a bit of motion interpolation): http://alteredqualia.com/tmp/rosetta/rosetta.webm [50MB] http://alteredqualia.com/tmp/rosetta/rosetta_stars.mp4 [28MB] ----- Edit: in case my server doesn't hold up, here are video mirrors on Streamable: https://streamable.com/w2wgj https:…

What is that light on the left?

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#68
post #54

Earlier quoted context omitted.

It's true. Some of the greatest minds have spent 20 fruitless years trying to discover a unified theory of object fields and elementary values in JavaScript.

Has everyone given up on string theory, or is there still hope another few hundred genius-years will bring progress?

At least it's not erlang's string-list of integers duality.

Re: A one-second video taken by the Rosetta probe on the surface of a comet

#70
post #35

Unfortunately Twitter butchers video quality. I remade both landru79's videos from scratch using original ESA 2048x2048 image sequence (plus I added a bit of motion interpolation): http://alteredqualia.com/tmp/rosetta/rosetta.webm [50MB] http://alteredqualia.com/tmp/rosetta/rosetta_stars.mp4 [28MB] ----- Edit: in case my server doesn't hold up, here are video mirrors on Streamable: https://streamable.com/w2wgj https:…

Dear NASA - Science is amazing. Don't forget to make it relatable by doing work like this! People love to see great images, so you gotta curate them and highlight the stunning stuff like this!

Rosetta was actually built and launched by ESA, not NASA :) Still, I couldn't agree more with your comment.
Post reply on HN