Posted by Mat Kaplan on 2012/02/27 10:22 CST
The second episode of Emily Lakdawalla's new video series reveals the gigantic library of solar system images captured by NASA spacecraft, and explains why we've seen so few of them. Emily says they're all online, waiting for space geeks to turn them into gold.
There is an ever-expanding bubble announcing Humanity's presence to anyone listening in the Milky Way.
Posted by Emily Lakdawalla on 2012/02/21 04:31 CST
It took Don Davis many hours of meticulous labor to assemble this beautiful postcard from Mars.
Posted by Emily Lakdawalla on 2012/02/17 11:37 CST
On June 30, Dawn stopped thrusting for a full Vestian day -- five hours and 20 minutes -- and just watched the asteroid rotate. But unlike the previous observations, they used all of Dawn's color filters to acquire the best-ever color photos of the lumpy world.
Posted by Emily Lakdawalla on 2012/02/16 10:14 CST
Cary and Michael Huang present a basic "powers of ten" visualization starting at human scale from which you can scrub downward smaller than quarks or upward to the scale of the entire universe.
Earlier today I wrote a post about how to calculate the position of a body in space from its orbital elements. I'm trying to get a big-picture view of what's going on in trans-Neptunian space.
A few times a year I find myself confronting a table full of numbers describing the orbits of things in the solar system, and cursing at myself because I've forgotten, again, what all these numbers mean and how to manipulate them to get the particular numbers I want.
Posted by Neil Patrick Stewart on 2012/02/16 02:17 CST
Last week, I received a�press release�with the headline "Big Bend National Park Designated As International Dark Sky Park." I asked my brother Neil to write something about this announcement for me.�
Posted by Bruce Betts on 2012/02/14 11:22 CST
I gave the first lecture of my Introduction to Astronomy and Planetary Science course last Wednesday, starting with a tour of the solar system. The course is Physics 195 at California State University Dominguez Hills.
Today, NASA announced its budget for its fiscal year 2013. As you might imagine, there are large budget cuts. But, the planetary science program has been cut disproportionately. NASA's allocations are out of balance.
How does the LRO lunar map compare with the new Chinese product from Chang'e 2?