Stand by for space weather

Stand by for space weather: three coronal mass ejections were released by the sun in the past few days and are aimed directly at the earth. The first hit tonight, without doing much damage.

Though it is important to prepare for these solar storms, don’t expect them to do much harm. Power companies use the warnings to protect their grids. What you can expect is an increased chance of seeing the aurora at lower latitudes.

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More evidence that there are active flows of water on Mars

flow features on Mars

More evidence that there are active flows of water on Mars.

Dark, finger-like features appear and extend down some Martian slopes during late spring through summer, fade in winter, and return during the next spring. Repeated observations have tracked the seasonal changes in these recurring features on several steep slopes in the middle latitudes of Mars’ southern hemisphere.

Though there are a number of unsolved issues about these features, the best explanation appears to be a liquid brine.

Saltiness lowers the freezing temperature of water. Sites with active flows get warm enough, even in the shallow subsurface, to sustain liquid water that is about as salty as Earth’s oceans, while pure water would freeze at the observed temperatures.

Go here to see the full image.

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Five insurers cancel their healthcare coverage in Indiana due to Obamacare regulations

Repeal it: Five insurers have announced they are canceling their healthcare coverage in Indiana due to Obamacare regulations. The reason?

Aetna was leaving the Indiana individual market over a rule in the federal health care overhaul that insurers essentially must dedicate 80 percent of the premiums they collect to medical care. Anything less than 80 percent would be paid as rebates to policyholders the following year.

In other words, Obamacare tries to legislate the percentage of overhead a company spends, something that in the real world is simply impractical. Under this kind of regulation, every private company will eventually go out of business, leaving us stuck with a nationalized healthcare system run by our government.

And we all can see how efficiently the government runs things, right? Imagine a visit to the doctors’ office being like going to the motor vehicle administration.

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Did the Earth once have two moons? And did they collide?

Did the Earth once have two moons?

Both satellites would have formed from debris that was ejected when a Mars-size protoplanet smacked into Earth late in its formation period. Whereas traditional theory states that the infant Moon rapidly swept up any rivals or gravitationally ejected them into interstellar space, the new theory suggests that one body survived, parked in a gravitationally stable point in the Earth–Moon system.

This new model also posits that the two moons eventually collided, producing the moon we have today.

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