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Comment I can't wait for the Ron Popeil 3d printer! (Score 3, Insightful) 91

Instead of having to clean a counter top, you only have to clean various hoppers and extruders, and the build plate. And all the prep tools and bowls. And you'll also have to program in all the steps. and it will only print one at a time.

It's so much easier than that 'old fashioned' way!

Comment Re:Action vs. inaction (Score 1) 307

Well, Comcast has no obligation to Netflix. Nor youtube or Hulu or any other website. But it does have an obligation to its subscribers to provide access to the internet. If its customers can't access Netflix because of a deficiency in the Comcast network and its connections to the web, it should be Comcast's responsibility to remedy. This is the net neutrality argument, and has generally been the status quo.

Currently, Comcast is arguing that Netflix is the one who has to pay to fix Comcast's deficiency, and so far, Netflix has caved and is paying.

Comment Hydrogen blimps (Score 1) 200

I don't see why they would use helium. Hydrogen would be much easier to deal with since it can be readily extracted from the hydrogen sulfide clouds. There wouldn't be any Hindenburg's since there's no oxygen in the atmosphere to react with.

It's also more bouyant, so the gas bag would be smaller for the same weight, and you could launch it from earth with less delta V.

Comment Gas volume vs Liquid volume? (Score 1) 293

Is that a 122 L tank or is it the volume of Hydrogen at STP?

Why not compare the distance you could travel with 122 L of liquid Hydrogen against 122 L gasoline vapors? (of course, that wouldn't fit with the narrative they are trying to put forward)

Comment Re:Is this surprising? Twice as many stars (Score 1) 119

So then really what they are confirming is that inference; that matter and dark matter are in a 1/9 ratio, and that if our galaxy has x stars and Andromeda has 2x stars, then Andromeda will also have 2y dark matter mass to our y matter mass.

That seems to be a more interesting finding.

Comment Is this surprising? Twice as many stars (Score 1) 119

I've been taught that Andromeda has approx. 2x as many stars as the Milky Way. I learned this years ago, as far as i can remember.

Is it really surprising news that a galaxy with twice as many stars is twice as massive? Were these researchers just fact-checking?

Comment Cosmic rays (Score 2) 76

Protecting from solar radiation is great, but i understand that the greater threat is cosmic rays. Solar radiation is somewhat easy to block, because you just put a light element shield, like hydrogen tanks, between the astronauts and the sun.

Cosmic rays are much harder to shield from because they are so high energy. They also come from everywhere, so require a omnidirectional shield.

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