Satellites

Blog about satellites: launches, operations, studies, fall.

The Sun during a solar flare (Image NASA/NOAA)

NASA released an image of the solar flare occurred on January 21 captured by the GOES-16 satellite that the agency runs with NOAA using the Extreme Ultraviolet and X-Ray Irradiance Sensors (EXIS) instrument. It’s specifically aimed to observe the Sun and monitor phenomena such as solar storms, which can have consequences on the activity of satellites but also of power plants and other human activities.

Global soil moisture map (Image MIT/NASA/JPL-Caltech)

An article published in the journal “Nature Geoscience” describes an analysis of data collected during the first year of NASA’s SMAP satellite’s mission. The results were surprising, especially because the data about the soil’s upper layer has a kind of memory of weather, more than you might think from theoretical models or from incomplete surveys carried out prior to this mission.

The Sentinel-1B satellite blasting off atop a Soyuz-STA rocket (Photo ESA–Manuel Pedoussaut)

A few hours ago, the Sentinel-1B satellite, part of the Copernicus / GMES, was launched from the Kourou spaceport, in French Guiana, on a Soyuz-STA/Fregat-M rocket. After about 25 minutes, the satellite regularly separated from the rocket’s last stage and started sending signals. Along with it some nanosatellites of the CubeSat type and the Microscope microsatellite of the French space agency CNES were launched.

The Sentinel-3A blasting off atop a Rockot launch vehicle (Photo ESA)

A few hours ago the Sentinel-3A satellite, part of the GMES / Copernicus program, was launched from the Russian Plesetsk Cosmodrome on a Rockot launch vehicle. After about an hour and a half it separated from the rocket’s last stage, called Breeze KM, it started communicating with the control center and to deploy its solar panels. Its final orbit is Sun-synchronous, which means it will pass over a certain area of ​​the Earth at the same local time, with an altitude of about 815 kilometers (about 506 miles).

The Jason-3 satellite right after blasting off atop a Falcon 9 rocket (Photo NASA/Bill Ingalls)

It was morning in California when the Jason-3 satellite was launched on a SpaceX Falcon 9 rocket from the Vandenberg U.S. Air Force Base. After nearly an hour it separated from the rocket’s upper stage and started deploying its solar panels. It will operate from a low Earth orbit of polar type, which means that it will pass over the poles, with an altitude between 1,328 and 1,380 kilometers (825 to 860 miles).