Blogs

Paleozoic, Mesozoic, and Cenozoic. These are the major eras in the history of life on Earth, and the transition from one period to another has been marked by a major turnover in fossils — one assemblage of organisms going extinct and being replaced by another. Today paleontologists agree that the biggest extinction in the fossil […]

In case you missed it, NASA is sponsoring a video contest starring your home planet. The winner will receive behind-the-scenes access to the launch of NASA’s next major Earth-observing satellite — the Landsat Data Continuity Mission (LDCM) — from Vandenberg Air Force Base in January 2013. Most of the public tends to focus on NASA’s […]

We recently posted an image of a dust storm in the Middle East (see below) that prompted one of our Facebook followers to ask why the dust is thicker near the left part of the image than the right. He wondered if the layer of dust is usually thickest near the origin of dust storms. […]

Friday April 27 the PALS instrument was packed up by Barron and Seth and shipped by truck to Grand Junction, Colorado to be installed on the Twin Otter aircraft assigned to the SMAPVEX12 campaign. This is the first leg of the PALS journey to Winnipeg, the site of the field campaign. Monday April 30 Seth […]

The past few weeks have been rough on Earth-observing satellites. But there was some good news and some engineering prowess to go along with the troubles.

SMAPVEX12 stands for the 2012 Soil Moisture Active Passive (SMAP) Validation Experiment. The SMAP mission… SMAP is a NASA Earth science satellite mission that uses microwave radar and radiometer instruments to measure soil moisture from space. The radar and radiometer share a six-meter mesh reflector antenna that rotates at approximately 14 revolutions per minute. The […]

During the next few weeks we’ll be writing a series of short articles or “blogs” bringing you news of the SMAPVEX12 field campaign taking place in Winnipeg, Canada this summer. Along the way we’ll be providing you with a view of what SMAPVEX12 is, when, where and why it’s happening, and we’ll introduce you to […]

We often see our images and stories pop up in different places…

We bring you this week’s indicator—90—with a sigh. Ninety is the combined number of Earth-observing instruments on NASA and NOAA satellites that are currently monitoring our planet. And that number is about to plunge, according to a National Research Council report released in May 2012. By 2020, there could be less than 20 instruments in orbit, and […]

By the year 1631, residents of southern Italy had perhaps grown complacent about the volcano that destroyed Pompeii. But near the end of that year, Mount Vesuvius reminded them of its power. From December 1631 to January 1632, explosive activity at Vesuvius caused a caldera collapse, a tsunami, mud flows, scorched farms, and up to […]