An Ariane 44L rocket lifted off from the Guiana Space Center in Kourou on Tuesday evening at 2302 GMT (7:02 EDT). Twenty one minutes later the rocket deployed a Lockheed Martin-built NSS-7 telecommunications satellite which will provide Internet and data relay services to the Americas, Europe and Africa.
Image credit: Arianespace
After much anticipation, an Ariane 5 rocket blasted off from Kourou, French Guiana last night, carrying the European Space Agency’s Envisat environmental monitoring satellite into an 800km orbit. Once it reaches its final orbit, the 8000 kg Envisat will observe the Earth’s environment using ten instruments which measure the state of the land, ocean, ice cover and atmosphere. This is the first launch of an Ariane 5 since a problem last July that placed two satellites into incorrect orbits.
The eagerly awaited launch of ESA?s Envisat environmental monitoring satellite took place in Kourou, French Guiana, today at 22:07:59 hrs Kourou time (02:07:59 hrs CET). Envisat?s spectacular night-time launch also marked the return to business for Europe?s Ariane 5 launcher.
Lift-off was witnessed by dozens of cheering engineers, scientists and project members at the launch site and at ESA centres across Europe. Rising into a clear sky, the Ariane 5 propelled the Envisat towards a lofty vantage point some 800 km above the Earth?s surface.
Envisat ? the most ambitious Earth observation satellite ? follows in the footsteps of ESA?s successful ERS-1 and ERS-2 missions launched in the 1990s. It will boost Europe?s capacity to take part in the study of the Earth and its environment by supporting critical research programmes on global warming and climate change issues, as well as performing crucial tasks such as pollution and disaster monitoring .
After a flawless lift-off, the Ariane 5 placed Envisat into sun-synchronous orbit, allowing ESA ground controllers at the space operations centre in Darmstadt, Germany, to take full control for the first time of the most complex satellite ever built in Europe.
?This has been a particularly exciting day for ESA and the European space community as a whole,? said Jos? Achache, ESA?s Director of Earth Observation. ?Europe is taking an important lead in global observations for worldwide environmental needs and Envisat is going to make a significant impact on the future of remote sensing of the Earth?.
?The ten instruments on board Envisat, more than on any other satellite, cover a wide spectrum of phenomena, delivering evidence of the interactions between the atmosphere, the ocean, the polar ice caps, the vegetation as well as human activity at the surface of the Earth. We will be able to trace the smallest changes to the Earth?s surface anywhere on the globe. The importance of this mission has triggered great interest in the Earth-science community, both at a European level and worldwide.?
Commenting from Europe?s spaceport in French Guiana, Jacques Louet, ESA?s Envisat Programme Manager, admitted that there was a certain risk to pack so much know-how into just one satellite. ?However, if we want to have a comprehensive understanding, we must follow this path?, he said.
Given its sheer size, Envisat has involved almost all of Europe?s space industries in the development of numerous advanced technologies, particularly for the payload.
Envisat is expected to be declared operational after just a few weeks, once its payload has been checked out and the various data-recovery links set up. Then the satellite?s six-month long commissioning phase will begin, ensuring that the ten instruments are operating as specified and that we can start delivering validated products to our users.
?Now Envisat is in orbit, the culmination of many years? work really begins and we are looking forward to the environmental benefits the satellite is going to bring to Europe,? added Mr Achache.
The successful launch of Envisat also marked a return to service for the Ariane 5 launcher. It?s upper stage has undergone over 300 tests since last summer, following the failure of flight Ariane 510 to insert two satellites, including ESA?s Artemis, in the correct orbits. However, thanks to ion propulsion, the Artemis mission is turning into a success story, as the satellite is making its way to geostationary orbit, and nominal operations could start this summer.
Original Source: ESA News Release
An Ariane 5 rocket carrying the European Space Agency’s Envisat satellite, Europe’s largest and most expensive satellite was rolled out to the launch pad yesterday. If all goes well, the rocket will launch Friday morning at 0107 GMT (8:07 EST Thursday night) from Kourou, the European spaceport in French Guiana and carry the 8,000 kg satellite into orbit. Envisat will spend the next 5 years monitoring the health of the Earth’s oceans, ice caps, land and environment.
An Ariane 44L rocket lifted off from Kourou, French Guiana on Saturday at 0659 GMT (1:59am EST), carrying an Intelsat 904 communications satellite into orbit. The Intelsat satellite will provide video and data services for Asia, Africa and Europe. This was the second launch for Arianespace this year; an Ariane 5 is scheduled to launch on February 28.
The second flight of the Atlas 3B rocket lifted off from Florida today, carrying an EchoStar 7 direct broadcasting satellite into orbit. This is an important launch for Lockheed Martin, as many of the parts of the upcoming Atlas 5, due for liftoff in May, were tested on this flight, including the upper stage booster. The flight was delayed twice, for a total of 30 minutes due to minor technical problems, but the rest of the launch seems to have gone flawless.
A Boeing Delta II rocket lifted off from Vandenberg Air Force Base, California today carrying a cargo of five spare satellites for the Iridium communications network. These additional five satellites join the 66 operational satellites and seven spares already in low-earth orbit. The US government is the primary customer for Iridium, and its 2-year, $72 million contract staved off bankruptcy for the troubled company.