Welcome to the Big Top | TheSpacewriter. Carnival Time once again! Indirectly I have a post on offer, at Centauri Dreams, and there’s a whole bunch of goodies out there at the other SpaceBlogs.
Is Dark Matter annihilating itself more vigorously than expected? Recent measurements say “maybe”… Is a new force at work in the dark sector? …to do so a “Phi” force might be drawing DM particles together, perhaps implying Dark Matter is a new energy source 5 times more abundant than regular matter. From this arXiv post,
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Near Earth Objects (NEOs) might be dormant comets – well 5-10% of them, anyway… Comets Disguised As Asteroids …which makes them a very handy resource for propellant, shielding and whatever else you want to do with comet stuff. Check out Anthony Zuppero’s Neofuel for the details.
The Carnival of Space is on at Discovery Space Blog and it’s in alphabetical order, just for something different. No contribution from moi this week as I’m mulling over different bits of space news and trying to write an essay about a new theory of Lunar origins, but was sidetracked by the recent discovery of
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Mercury is half a Mars. It’s 2/3s iron-alloy core and has an uncompressed density of 5.3 (Earth is just 4.08), which makes it the densest planet. But it is so close to the Sun that it is also the fleetest, thus not showing any signs of being overly leaden. At a mass of 0.0553 Earths
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Bernard Cohen studied the renewability of uranium for breeder fast-reactors back in 1983… Breeder Reactors: A renewable energy source …concluding that uranium pulled from seawater at 6,500 tons per year was sustainable for 5 billion years. That’s 18.5 TW.yr of raw energy since uranium in a breeder can have virtually 100% of its energy potential
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