I haven’t had to chop wood in a long time, but I’m delighted to know that this exists.
His name is Russell Sargent and the first spacecraft he worked on, called Cygnus, recently arrived at the international space station. He built the guidance and some of the navigation software for demos 3 through 5, and also helped to design the approach trajectory in the last figure shown here. The mission went very successfully, and now leaves NASA with a cheaper alternative to bring cargo into space. Very cool.
I talked with Russell about his current project: the Dream Chaser, a new commercial mini-space shuttle. He’s building the autopilot during entry and training astronautics how to fly it in the NASA simulator.
Chris has been watching math videos (huh?!), so I tuned in for a few, including this video introducing differential equations. They’re really easy to watch, follow, and learn from, and the instructor is an absolute delight. It’s impressive to see lessons that are considered ‘upper level’ math presented with such ease and in such manageable chunks. I am sad that my last math class was 8 years ago; these mini-lessons are just enough to fill that void for awhile longer!
Even if you’re not a math person, there are videos for you! The Khan Academy is an online-based nonprofit with a mission to make quality education available to everyone. They have nearly 4,000 videos on topics from biology, to animation, to finance, to history. I love the mission and the execution; two thumbs up. Now go learn about differential equations!
This was what I googled after my complete rendition of Les Miz in today’s shower. Science!
I am worried for the cow’s health and well-being, but am also fascinated by this technological advance and how it could help farmers. What’s your take?
This Asian elephant foetus after 12 months in the womb is catching some shut eye before she takes her first heavy steps in the world in just under a year’s time. The gestation period for an elephant is 22 months. This and other animals in the womb were captured on camera by scientists for a National Geographic documentary. I think it’s really neat to see how similarly all mammals start, and an elephant that is ‘floating’ is simply mesmerizing. Check out more photos and details here.
The Biological Advantage of Being Awestruck
“In other words, awe has helped us survive”