Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
Slashdot Deals: Deal of the Day - Pay What You Want for the Learn to Code Bundle, includes AngularJS, Python, HTML5, Ruby, and more. ×

Comment Re:Maybe affects Boeing, not SpaceX (Score 1) 139

The protest has been filed (it just costs a stamp!) and the stop work either has or will soon be official direction from the contracting officer.

SpaceX and Boeing may use their own funding to work on whatever they like, but they CANNOT charge the Government for the work they perform during the stop work. If the protest is not sustained and the contracts are left in place, the net effect would then be that they would complete their contracts for less than the negotiated cost. I don't know what sort of contract they have with NASA, but for a fixed-price contract it will come out in the wash and they'll be reimbursed for the work they did on their own dime during the protest (in effect, but not strictly legally).

If the contract is instead cost-plus (incentive or fee), they will come in under their bid and be: 1) unable to recover their investment, because it's illegal to bill the work after the fact if you weren't authorized to do the work, and 2) in hot water with NASA, because it's illegal for the Government to accept the work for free.

In short, reputable contractors do NOT perform work on Government contracts when told to stop. It's bad all around.

Comment Re:Weak magnetic fields on the moon. (Score 3, Interesting) 76

It's not a bad theory, but the leading candidate relates to impact processes that leave what is called "remanent magnetization". The science is not settled. The abstract here gives you a feel for the kind of discussions taking place (but you probably have to pay to get to the article). Google will turn up more work along these lines, including tests in hypervelocity launcher facilities.

Comment Re:Figures. (Score 2) 89

So, at a time when orbital debris is very much a major problem for a sizable number of space-faring nations, the US forced China to create in LEO the largest and longest-lived debris field since the dawn of the space age, posing a hazard to everybody trying to operate there.

And they are complete and helpless victims of "open spying by satellites", with no spy satellites of their own.

When China finally reaches the modern era and actually lets its people have free access to information, such ignorant posts as yours might become less common. Well, no, this is Slashdot.

Comment Re:Figures. (Score 4, Interesting) 89

They were in talks to participate in the ISS. The ISS partners invited them in as potential responsible, collaborative partners in the future of manned space flight..

Then they conducted a reckless ASAT test at relatively high LEO altitudes and nearly doubled the number of trackable debris at that altitude [see Johnson Space Center's Orbital Debris Quarterly Newsletter for the chart]. At that altitude, the pieces of their defunct weather satellite will remain a hazard for many decades. That got them uninvited.

China needs to decide whether the PLA is running the show or not, and decide whether they want to be a responsible space-faring nation... or not.

Comment Re:Erosion of the ionosphere? (Score 1) 130

A thinner or closer ionosphere does not relate to scouring of the atmosphere by the solar wind. It is the Earth's natural magnetic field that protects the atmosphere from being stripped away by the supersonic solar wind.

A pending reversal of the Earth's magnetic dipole may somewhat increase atmospheric scouring, but you must remember that only the dipole moment is going to reverse direction. The higher order (e.g. quadrupole) moments won't go anywhere and will still deflect the solar wind. You'll just get aurora in unusual places for a while.

Comment Re:let this be a lesson to NASA/JPL (whoever) (Score 1) 429

Right, and later on something will fail and it will explode unexpectedly.

The idea has been tried before (big surprise). The Russians used to deliberately blow up their satellites or rocket bodies, and in doing so produced an enormous amount of debris. They eventually saw that this wasn't the best idea.

The best way to avoid responsibility is to say, "I've got responsibilities."