71–80 of 88 posts
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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?
x === x; // false
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?
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To be fair, people have been studying and predicting celestial movements for millennia, and boiled it down to unbelievably precise mechanical formulae. JS is poorly understood in comparison. I say this to hope you feel better at work. I've been pressed into frontend web work and it's fractal complexity.
JS is poorly understood in comparison This might be the most hilariously ridiculous true statement I've ever heard.
ESA PR is basically hopeless. It's the polar opposite of NASA. I guess the budget is nonexistent. Good that there are people that disseminate these things on Twitter etc. The Rosetta and Philae stuff, Emily Lakdawalla of Planetary Society did a better job of covering it than anyone at ESA, unfortunately.
Isn't NASA prohibited from using any of its budget for explicit PR, to avoid anything remotely political? (Honestly as a news consumer it's not all that bad because it means I can trust any communications coming from NASA proper to be purely mission oriented—focused on science.)
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You're very talented, this is dope. Thanks for taking the time to make this and share it with us!
Credit should go to landru79, he keeps finding interesting things in Rosetta's raw data. I basically just tried to correct for Twitter's terrible video handling by re-tracing his steps :) Go check landru79's Twitter feed, there are many more interesting comet images and videos (e.g. he combines multiple frames into color images): https://twitter.com/landru79 BTW here are original ESA images: https://imagearchives.esa…
To put things in perspective, the comet, 67P/Churyumov-Gerasimenko, is about 4km in diameter, moving at 135,000kms per hour. Rosetta's rendezvousing with the comet required travelling a cumulative distance of over 6.4 billion kms. Gravity assists were needed from four planetary flybys – one of Mars (2007) and three of Earth (2005, 2007 and 2009) – a long circuitous trip that took ten years to complete. Now back to my…
Moving at 135,000 km/h relative to what? (honest question)
Programming challenge: filter out (or otherwise remove) the sky from the video to isolate the comet surface for better analysis.
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:…
To put things in perspective, the comet, 67P/Churyumov-Gerasimenko, is about 4km in diameter, moving at 135,000kms per hour. Rosetta's rendezvousing with the comet required travelling a cumulative distance of over 6.4 billion kms. Gravity assists were needed from four planetary flybys – one of Mars (2007) and three of Earth (2005, 2007 and 2009) – a long circuitous trip that took ten years to complete. Now back to my…
Moving at 135,000 km/h relative to what? (honest question)
For reference, Earth does a mean speed of about 107,000 km/h relative to the solar system's center of mass.
To put things in perspective, the comet, 67P/Churyumov-Gerasimenko, is about 4km in diameter, moving at 135,000kms per hour. Rosetta's rendezvousing with the comet required travelling a cumulative distance of over 6.4 billion kms. Gravity assists were needed from four planetary flybys – one of Mars (2007) and three of Earth (2005, 2007 and 2009) – a long circuitous trip that took ten years to complete. Now back to my…
Moving at 135,000 km/h relative to what? (honest question)