December 11, 2017

There were 2 posts published on December 11, 2017 (this is page 1 of 1).

Fence is structurally complete!

My fence: it’s critter-proof now!

I nailed on the last few pickets to our new fence yesterday. These took some time because they had to be custom-sawed to fit the odd gaps left when the full pickets didn’t line up. Rather than stop and cut individual boards during my previous fence work days, I chose instead to keep motoring so I got more surface area done. Thus, there were about ten or so odd-shaped pickets to create.

A few hours of measuring, cutting, and nailing on Sunday and I had the fence structurally complete. It is now critter-proof. I put in the last board as the sun was going down and then took out a section of our old fence so that we could enjoy our entire backyard for the first time ever. Hurray!

Now I need to go back and trim down the too-tall posts and 2x4s. I may even cap the posts to better weatherproof them. Then I will take down the old fence and either haul it to the dump or find neighbors who might want to scavenge it for spare pickets. I’ll also have to fill in the holes left by the old fence posts. Still a bit of work to be done but I’m getting there!

NASA Considers Magnetic Shield to Help Mars Grow an Atmosphere

I first read this story last week and it’s been on my mind ever since. It’s beyond our current capabilities to generate a planet-sized magnetic field but we can possibly block solar wind enough to bring Mars back to life. Utterly fascinating!

The Planetary Science Vision 2050 Workshop is happening right now at NASA headquarters in Washington DC. The workshop is meant to discuss ambitious space projects that could be realized, or at least started, by 2050.One of the most enticing ideas came this morning from Jim Green, NASA’s Planetary Science Division Director. In a talk titled, “A Future Mars Environment for Science and Exploration,” Green discussed launching a “magnetic shield” to a stable orbit between Mars and the sun, called Mars L1, to shield the planet from high-energy solar particles. The shield structure would consist of a large dipole—a closed electric circuit powerful enough to generate an artificial magnetic field.

A magnetic shield to protect Mars

Such a shield could leave Mars in the relatively protected magnetotail of the magnetic field created by the object, allowing the Red Planet to slowly restore its atmosphere. About 90 percent of Mars’s atmosphere was stripped away by solar particles in the lifetime of the planet, which was likely temperate and had surface water about 3.5 billion years ago.

Source: NASA Considers Magnetic Shield to Help Mars Grow an Atmosphere