Fraser Cain

I didn't have a guest this week, instead I just answered everyone's questions for an hour. We got through about 40 of them.

Questions about the Sun releasing a killer solar flare, capturing asteroids to mine, and if my wife is into space too.

When we send anything to space, we have to pay an enormous amount of money. That’s because you need to push satellites, water, astronauts up and out of the Earth’s gravity well. Whether you’re just going to orbit, or heading to the Moon, or out into deep space, it makes the most sense to build your structures in space, out of material that you got from space.

In this week's questions show, I wonder if it's cheaper to build things in space, if the Universe is expanding because it's rolling downhill, and do astronauts fart in space?

Notice that you haven’t been hearing much about black holes crashing into each other recently? That’s because the world’s most sensitive gravitational wave hunters have been offline for the last year.

Well, they're back now, with enough upgrades that they should be capable of finding a black hole merger every week, not to mention more colliding neutron stars, and maybe, just maybe, black holes eating neutron stars.

This week's guest is Geoff Notkin, the host of TV's Meteorite Men. He was recently elected to be the President of the National Space Society.

http://www.geoffnotkin.com/

NASA’s Voyager spacecraft are traveling on an escape trajectory from the Sun, and are now on a journey that will take them through the outer reaches of the Solar System and out into the Milky Way Galaxy.