Did anyone else make the return trip and get disappointed there was no "welcome home"?
If the Earth were 100 pixels wide
181–190 of 216 posts
Re: If the Earth were 100 pixels wide
#182Earlier quoted context omitted.
I'm more bothered by the authoritative fact that 'the timeline for a manned mission to Mars is the 2030s'. Says who, NASA? They're not the only ones trying to get there.
Does anyone else have a realistic more aggressive timeline?
See "The Case for Mars" by Robert Zubrin (manned landing 10 years from project start, then every 2 years thereafter), or the various hints dropped by Musk in interviews as to his plan.
Re: If the Earth were 100 pixels wide
#183I'd really like to see a few more markers: 1) 3100 px: Farthest humans have been from Earth (Apollo 13, April '70: 400,171 km) 2) 10 px: Gemini 11, farthest from Earth on non-lunar mission (Sept '66: 1,374.1 km) 3) 3 px: Apogee of ISS (farthest a human has traveled for... a while: 424 km) (I'm probably forgetting something, can't find a good list of spaceflights by distance...) Sources: http://en.wikipedia.org/wiki/L…
I would like to see Voyager 1 (about 1.847×10^10 km, accordingly to wikipedia [1])
[1]: http://en.wikipedia.org/wiki/Voyager_1
[EDIT] 1000 to 10^10 :P
Re: If the Earth were 100 pixels wide
#184Earlier quoted context omitted.
http://en.wikipedia.org/wiki/Venus#Internal_structure
I don't follow. What I posted above is simply a layman's summary of all the same things cited in your link.
You didn't see this line?
> Like that of Earth, the Venusian core is at least partially liquid because the two planets have been cooling at about the same rate.
Re: If the Earth were 100 pixels wide
#185I'd really like to see a few more markers: 1) 3100 px: Farthest humans have been from Earth (Apollo 13, April '70: 400,171 km) 2) 10 px: Gemini 11, farthest from Earth on non-lunar mission (Sept '66: 1,374.1 km) 3) 3 px: Apogee of ISS (farthest a human has traveled for... a while: 424 km) (I'm probably forgetting something, can't find a good list of spaceflights by distance...) Sources: http://en.wikipedia.org/wiki/L…
I would like to see Voyager 1 (about 1.847×10^10 km, accordingly to wikipedia [1]) [1]: http://en.wikipedia.org/wiki/Voyager_1 [EDIT] 1000 to 10^10 :P
Thats about 144953696 px if my calculations aren't failing.
Re: If the Earth were 100 pixels wide
#186And only 53 pixels wide?
Is it even worth going there?
Re: If the Earth were 100 pixels wide
#187Earlier quoted context omitted.
Speed of light: 1.07925285 × 10e9 km/h Reported speed: 200,000 km/h So more like 1/5000 the speed of light. But as pointed out below the reported speed may be way off. I wonder if a mistake about the speed of light was made; it's about 300,000 km per second .
Right, but the original comment is also quite right that the speed is being misreported and the actual speed you're going (reported as 7000 pixels per second) is 3x the speed of light: (12742 km) / (100 px) * (7000 px)/s / c = 2.975
Yes; mine was more a comment on the site.
Re: If the Earth were 100 pixels wide
#188Earlier quoted context omitted.
100 pixel earth = 13KM 1 pixel = 0.13KM 7K pixels/s = 910 KM/s 910 * 60 * 60 = 3.3 Million KM/h
The Earth is not 13 km in diameter. Maybe you meant 13 Mm, or roughly 13 000 km? The result is ~3 billion km/h then. I haven't timed it, but that seems to align with how long the animation took (around half of a minute).
I timed it, and it was about a minute, so right in line with the 7k pixels/s. That does translate to about 3 billion km/h, or about 250,000 mh/s².
Re: If the Earth were 100 pixels wide
#189Earlier quoted context omitted.
I don't follow. What I posted above is simply a layman's summary of all the same things cited in your link.
You didn't see this line? > Like that of Earth, the Venusian core is at least partially liquid because the two planets have been cooling at about the same rate.
Oh no, I'm very much aware of that reasoning.
I offered a guess as to how/why someone might think the core is solid, not an argument for that conclusion. I included an easily digestible article which touches on all the same theory as the Wikipedia entry which was posted in "response" to it.
Not all Internet communication has to be quippy argument.
Also, the context of that citation:
"By analogy with Earth, the core of Venus is at least partly liquid because the surface-to-volume ratios of the two planets in Figure 10.5 are virtually identical, which implies that they have been cooling at about the rate. If the core of Venus is at least partly liquid, then Venus should have a magnetic field similar in strength to the magnetic field of Earth as discussed in Section 6.4.5 and in Science Briefs 6.7.3,4,5,6 and 7. However, the Mariner 2 spacecraft determined during a flyby on December 14 of 1962 that Venus does not have a planetary magnetic field."
The book goes on to cover various theories about the absence of a magnetic field identifying a solid core as "not credible", slow rotation of Venus failing to activate convection currents as "possible", lack of a solid inner core due due to pressure (questionable) and temporary decay of the field (questionable).
Re: If the Earth were 100 pixels wide
#190This is the first time I've actually been able to comprehend the perspective of distances so big they don't mean much as a number. Thank you.
You can easily build an in 1:2e9 scale replica of the Solar System. You'll just need a 90cm sphere to use as the Sun, some 4-5 km of area do arrange things and a paquimeter for measuring the planets. At this scale, everything is just about as big/small as one can manipulate. Bu you won't be able to place the Voyager in there. For that you'll need a car and a road trip.
There are these models too, already installed! https://en.wikipedia.org/wiki/Sweden_Solar_System