Posted by Jason Davis on 2012/04/11 12:29 CDT
A classified U.S. military satellite recently launched into an orbital inclination of 123 degrees. What makes this trajectory so unique? Pondering the answer affords the opportunity to learn some deceptively tricky concepts about the nature of all spacecraft orbits.
Posted by Emily Lakdawalla on 2012/03/15 03:05 CDT
Yesterday I was treated to a little tour (little, because it's a little building) of Honeybee Robotics' office here in Pasadena. Honeybee is developing some great technology for future space missions for Earth, Mars, and beyond.
Posted by Mat Kaplan on 2012/02/06 09:46 CST
This weeks Planetary Radio features updates on the James Webb Space Telescope, from Deputy Project Director Eric Smith. The discussion centers around the budget controversy, and why the JWST is worth the money.
Posted by Jason Davis on 2012/01/09 05:54 CST
As of November 2011, the Earth Observing Handbook counts 109 active missions to study the Earth as a planet, with 112 more approved and planned for the future. Jason Davis provides an overview of key current and upcoming earth-observing missions.
Posted by Emily Lakdawalla on 2011/11/28 03:07 CST
Maybe it's because I was a kid during the Cold War; I always assume that information about anything nuclear only comes out on that "need-to-know basis."
Posted by Emily Lakdawalla on 2011/10/19 01:49 CDT
JAXA's solar sail demonstration craft IKAROS is still puttering along, 17 months after it launched, and its controllers back on Earth keep coming up with new things to try with it. I'm pretty amazed by the most recent trick: reversing its spin direction. This may not sound like a big deal, but it is, especially for IKAROS.
Posted by Ryan Anderson on 2011/05/27 09:01 CDT
Laser beams and space exploration are perfect for each other, and not just because all self-respecting starship captains know their way around a blaster. It turns out that zapping rocks with a laser is not only fun, it also can tell you what they're made of!
Posted by Emily Lakdawalla on 2011/03/21 01:37 CDT
The Jet Propulsion Laboratory has posted a short video showing some recent testing of an engineering model of the Mars Science Laboratory in their outdoor Mars Yard; they're testing the performance of the rover's driving capability over slopes of varying steepness and covered with bedrock, compacted sand, and very loose sand.
Posted by Emily Lakdawalla on 2010/09/12 10:50 CDT
Today the 365 Days of Astronomy podcast aired my contribution, The Flight of Hayabusa, a recap of that dramatic mission.
Posted by Emily Lakdawalla on 2010/01/18 10:48 CST
Data from all science instruments on all of NASA's and ESA's space missions, not just cameras, is archived in the Planetary Data System and Planetary Science Archive, and almost all of that data is available online.
Posted by Emily Lakdawalla on 2009/12/15 11:25 CST
I've gotten this question about once a week since Spirit got stuck, but yesterday, two different readers asked the same question within an hour of each other, so I figured it was time for a blog entry.