Why the Asteroid Belt Doesn’t Threaten Spacecraft

When Cosmos showed the asteroid belt Sunday night, I noticed that, taking some artistic license to quickly get a point across,  they showed it as crammed with asteroids.  Anyone familiar with the real asteroid belt knows that's not accurate.  Even in the belt, asteroids are lonely rocks. When you think of the asteroid belt, you … Continue reading Why the Asteroid Belt Doesn’t Threaten Spacecraft

If the Moon Were Only 1 Pixel – A tediously accurate map of the solar system

Wow!  We've talked before that humans can't really comprehend large numbers, or very large or very small distances.  We have to deploy metaphors to handle them.  At this link is an image of the solar system, drawn to scale, including all the empty space.  If you think you've ever seen that, you may be in … Continue reading If the Moon Were Only 1 Pixel – A tediously accurate map of the solar system

The space age is in full swing, for robots

Yesterday I made the observation that it was much cheaper to transmit information than to travel to an interstellar destination, observing that sending a microscopic robot able to use raw materials in the destination system to bootstrap manufacture what it needs. The Leather Library pointed out that this applies as well to destinations in our solar … Continue reading The space age is in full swing, for robots

Why is the solar system flat?

Machines Like Us and others linked to this cool video explaining why the solar system is flat. http://www.youtube.com/watch?v=tmNXKqeUtJM I'm not entirely sure the four dimensional stuff was necessary, although it was interesting.  One thing to realize though, is that while the solar system is flat, it's not flat in the same orientation as other solar systems, … Continue reading Why is the solar system flat?

Ask Ethan #20: Is the Mars One crew doomed? – Starts With A Bang

What Mars One is counting on is that they can safely land a heavier payload than ever before, that they can do it more precisely than ever before (as in, within just a few hundred meters of previous successful landings), and they can do it for only 12% of the projected costs, with a total … Continue reading Ask Ethan #20: Is the Mars One crew doomed? – Starts With A Bang

UChicago researchers use Hubble Telescope to reveal cloudy weather on alien world | UChicago News

Weather forecasters on exoplanet GJ 1214b would have an easy job. Today’s forecast: cloudy. Tomorrow: overcast. Extended outlook: more clouds. That's the implication of a study led by researchers in the Department of Astronomy and Astrophysics at the University of Chicago who have definitively characterized the atmosphere of a super-Earth class planet orbiting another star … Continue reading UChicago researchers use Hubble Telescope to reveal cloudy weather on alien world | UChicago News

Reinstalling Eden : Nature : Nature Publishing Group

Eve, I call her. She awakes, wondering where she is and how she got there. She admires the beauty of the island. She cracks a coconut, drinks its juice and tastes its flesh. Her cognitive skills, her range of emotions, the richness of her sensory experiences, all rival my own. She thinks about where she … Continue reading Reinstalling Eden : Nature : Nature Publishing Group