Solar Storm Nearly Wipes Out NASA's Messenger 110
tcd004 writes "There was a close call last week when an enormous coronal ejection nearly hit Mercury and the orbiting Messenger spacecraft. Scientists at the Space Weather Laboratory flew into action, modeling the event to determine how close it had come to the spacecraft using data from the twin STEREO sun observers. The group used an animated model called WSA-ENLIL, named after a Sumerian lord of wind and storms. Enlil, who wears a crown of horns, is known for being a kind but also cruel god who sends forth disasters, including a great flood that wiped out humanity. Fortunately Messenger escaped Enlil's wrath."
Re:Are these efforts worthwhile? (Score:5, Informative)
Apart from the knowledge we obtain from these vehicles...can we justify these expensive ventures in these recession times?
Launched in the good ol' days of 2004, according to Wikipedia. Already made it's first flyby before the economic collapse.
The only way you could save money on it now is to shut down the ground team, effectively throwing away your investment and many years' work.
Re:Are these efforts worthwhile? (Score:5, Informative)
I might not be able to tell you exactly how this will benefit you, but in general more knowledge is never a bad thing. Consider the huge number of products and ideas that we use everyday that came from accidents or people just playing around (rubber, penicillin, and superglue, to name a few).
War, on the other hand, serves no creative purpose, but only destroys. I would ask you how we can continue to justify several different military actions during a recession.
One more thing: first, consider NASA's budget which is 0.6% of the federal budget. Now consider the Department of Defense's budget, which is 19%. (Both of these numbers are straight from Wikipedia for 2010.) I can't justify spending 32 times as much on wars that will only serve to kill people and create a worldwide hatred of America as we spend on our space program. It doesn't make any sense to me.
Re:Are these efforts worthwhile? (Score:4, Informative)
War, on the other hand, serves no creative purpose, but only destroys. I would ask you how we can continue to justify several different military actions during a recession.
Its not politically correct nor a popular notion, but massive technology and societal improvements are the direct result of war. To deny this is to admit one doesn't know history. And contrary to your assertion, war is frequently fueled by massive levels of creativity. Almost everything you take for granted in modern life, either directly or indirectly, can be attributed to war.
Re:Change orbits? (Score:4, Informative)
The most physically obvious thing you are overlooking is the amount of material in a CME. Even at their most violent a CME would be hard pressed to top 1e-20 of the Sun's mass, which would mean that with an eruption speed topping 3000 km/sec the most kick it could give would change the Sun's speed by less than the radius of a hydrogen atom per hour.
So, to follow your analogy, it is not so much like throwing your mitten in the opposite direction than it is trying to jet your way to the bank by a single, unenthusiastic fart. Which, as a strategy, is pretty close to the usual generous slashdot manner.