ESA

22:43 November 5, 2009 PST

The Soil Moisture and Ocean Salinity (SMOS) mission will make global observations of soil ...

The 658kg (1,450 lb) Soil Moisture and Ocean Salinity (SMOS) satellite launched by the European Space Agency (ESA) this week is the first ever satellite designed both to map sea surface salinity and to monitor soil moisture on a global scale. The unique radiometer it carries will enable passive surveying of the water cycle between oceans, the atmosphere and land thereby playing a key role in the monitoring of global climate change. Read More

TELECOMMUNICATIONS

GPS satellites tell us where we are, but what tells them where they are?

By Jeff Salton

18:00 November 1, 2009 PST

This is an artist's concept of a quasar (bright area with rays) embedded in the center of ...

Global Positioning System (GPS) devices have permeated society to the point where millions of us rely on them daily for directions, locations and traffic avoidance (if only they could tell me where I left my car keys). GPS satellites send signals to a receiver in your handheld or car-based GPS navigator, which calculates your position on the planet based on the location of the satellites and your distance from them. The distance is determined by how long it took the signals from various satellites to reach your receiver. But have you ever thought what tells the GPS satellites where they are in the first place? Read More

AERO GIZMO

India launches first lunar mission

By Kyle Sherer

18:32 October 26, 2008 PDT

Three of the instruments are from the European Space Agency, which is also assisting with ...

The Indian Space Research Organisation has successfully launched Chandrayaan-1, the country’s first scientific mission to the moon. The two-year, USD$80 million mission will see the PSLV-C11 rocket enter lunar orbit in roughly two weeks, before descending to a final 100 km-high circular orbit. The Moon Impact Probe will land on the lunar surface, while the orbiter will continue gathering data with 11 scientific instruments. Read More

ECOGIZMO

Arctic ice set for another all-time low

By Jack Martin

23:28 August 29, 2008 PDT

August 30, 2008 The global warming debate will get even hotter in the near future with the news that current observations from ESA's Envisat satellite suggest that the extent of Arctic polar sea-ice may this year shrink to a level very close to that of last year's record minimum ice cover. Envisat observations from mid-August depict that a new record of low sea-ice coverage could be reached in a matter of weeks. This animation is a series of mosaics of the Arctic Ocean created from images acquired between early June and mid-August 2008 from the Advanced Synthetic Aperture Radar (ASAR) instrument aboard Envisat. The dark grey colour represents ice-free areas while blue represents areas covered with sea ice. The image at right shows sea-ice coverage as of mid-August 2008 with the red line indicating the all-time minimum Arctic sea-ice coverage in September 2007. Anyone know of any DIY Ark-building courses? Read More