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Comment Re:The HELL they can't! (Score 3, Interesting) 74

Being in the industry, the reason I was given was (1) the electrolyte is very expensive right now and (2) investors need a demonstration of return. The flow devices scale much better than Lithium batteries, store more energy, and can discharge over longer periods of time. This makes them eligible for capacity markets, but we are coincidentally in a period of over-supply in the energy markets, so capacity clearing prices are not supporting their cost of entry. Secondly, as a storage device, they need to arbitrage the energy prices, charge at low prices and discharge at high prices.


2 Planets Can Share the Same Orbit, In 3 Different Ways 71

StartsWithABang writes: One of the most important characteristics of a planet, at least according to the IAU definition, is that it clear its orbit of all other bodies. But if we allowed for a special caveat — the possibility of two similarly-sized objects sharing the same orbit — could we have a stable configuration where that occurred? Surprisingly, not only is the answer yes, but there are three ways to do it: to have one at the L4/L5 Lagrange point of the other, to have a close-orbiting binary planet, or to have orbit-swapping worlds, where they periodically change spots with one another. Unbelievably, our Solar System has a history of all three!

Those who claim the dead never return to life haven't ever been around here at quitting time.