Posted by Jim Bell on 2008/06/13 01:49 CDT
One of the ways that planetary scientists try to understand the origin and evolution of landforms on other planets is by studying similar kinds of landforms or "analogs" here on the Earth. For the past few days I've been working with a group of colleagues doing just that--specifically, studying dunes in the Great Sand Dunes National Park and Preserve in order to try to better understand the nature of sand dunes on Mars.
Posted by Emily Lakdawalla on 2007/04/04 02:05 CDT
According to a press release issued this morning by the National Oceanic and Atmospheric Administration, the enormous solar flare that erupted on December 5 and 6 last year was accompanied by an intense radio burst that caused large numbers of Global Positioning System recivers to stop tracking the signal from the orbiting GPS satellites.
Posted by Stephen Grasby on 2006/07/19 04:00 CDT
From June 21 to July 6, 2006, a four-person team traveled to Borup Fiord Pass to perform geological field studies to compare with satellite images.
Posted by Emily Lakdawalla on 2005/09/29 08:14 CDT
...but this one is much closer to home than Katrina and Rita were.
Posted by Emily Lakdawalla on 2005/08/26 09:00 CDT
On August 2, 2005, MESSENGER flew by Earth at an altitude of a mere 2,347 kilometers above Mongolia.
Posted by Emily Lakdawalla on 2005/06/02 09:00 CDT
As MESSENGER began its approach for its August 2 flyby of Earth, its cameras have snapped their first images. The images clearly show a cloudy Earth—and, to scientists' surprise, the Moon as well.
Posted by Charlene Anderson on 2002/08/01 12:00 CDT
Home. Family. This will be Voyager's enduring legacy: It has changed forever the feelings raised by those words. Through its robotic eyes we have learned to see the solar system as our home. Through its portraits of the planets we know that they are part of our family. Apollo astronauts showed us a tiny Earth alone in the blackness of space. Now, with these images, Voyager has shown us that Earth is not really alone. Around our parent Sun orbit sibling worlds, companions as we travel through the Galaxy.