Only inner planets-Mercury and Venus-transit across the Sun and can be seen from Earth because they are the only planets that lie between the Earth and Sun. ![]() The predicted date and time of different celestial phenomena, such as meteor showers, eclipses, and other interesting events, are listed in an astronomy calendar to be tracked by skywatchers and astronomy amateurs.Ī planetary transit occurs when a planet travels across the Sun it may be considered a special kind of eclipse. In certain conditions, some of these astronomical events can be observed by the naked eye without the use of binoculars or telescopes. The company will also manufacture 6 satellites dedicated to Galileo Second Generation constellation.The skies never stop amazing us with numerous, fascinating, and often rare astronomical phenomena. At the forefront of satellite navigation in Europe, Thales Alenia Space is prime contractor for the current EGNOS augmentation system and provides the ground segment for Europe’s new Galileo system. Thales Alenia Space will play a major role on the Galileo Second Generation system, enhancing the constellation’s performance and cybersecurity. EGNOS-enabled procedures at airports result in fewer aborted landings, which in turn means significant fuel savings for airlines, and therefore reduced carbon emissions. Ride-sharing and other sustainable mobility solutions all rely on precise positioning.Įuropean Global Navigation Satellite Services (GNSS), in particular EGNOS, also help make air travel greener and more accessible. Satellite-based navigation generally makes life on the road easier, by significantly reducing traffic and therefore its carbon footprint. The Galileo navigation satellite system contributes to many of the innovative trends on our roads, making passenger and freight transport more sustainable. Our teams are also working on the state-of-the-art SWOT oceanography satellite for CNES and NASA. Thales Alenia Space has contributed to some of ESA’s landmark scientific missions: the MERIS medium-resolution spectrometer on Envisat to reveal the secrets and colors of the oceans, GOCE (gravity field and steady-state ocean circulation explorer), which will provide a detailed map of Earth’s gravitational field, and the SMOS satellite for the analysis of soil moisture and ocean salinity. Other examples include the MERIS multispectral optical “water color” spectrometer on the Envisat satellite and the OLCI instrument on Sentinel-3, the SWIM altimeter on the CFOSat satellite for CNES, which measures wave spectra, and the SADKO altimeters on Russia’s GEO-IK satellites. In addition, we supply the SRAL SAR altimeters for Sentinel-3. We also built the AltiKa Ka-band altimeter for the French-Indian SARAL oceanography satellite, and the SIRAL 2 very-high-resolution SAR (synthetic aperture radar) altimeter on ESA’s Cryosat-2 satellite, capable of measuring variations in sea ice thickness and continental ice mass balance with unparalleled accuracy. Our company has provided a host of instruments for oceanography, including the Poseidon altimeters on the Topex-Poseidon and Jason 1, 2 and 3 missions for the French space agency CNES. Thales Alenia Space is a world leader in space altimetry, a technique that enables the study of sea surface height, sea ice thickness, and river and lake levels, as well as land, ice-sheet and seabed topography. The new satellites will be used to: measure carbon dioxide emissions in the atmosphere arising from human activity check the thickness of ice fields and associated snow coverings support advanced new services for sustainable management of agriculture and biodiversity observe the temperature and salinity of sea surfaces as well as the density of ice fields and bolster land monitoring and emergency management services. Providing the altimeter for the CRISTAL polar ice and snow topography mission.The CO2M payload for CO2 emissions monitoring generated by human activity.The Rose-L mission: L-Band radar for monitoring of soil moisture and polar ice thickness.The CIMR mission: passive microwave imaging to measure ocean surface temperature and a number of marine parameters.The CHIME mission: hyperspectral imaging for agriculture, food security, soil condition, biodiversity, etc. ![]() Specifically, Thales Alenia Space is prime contractor for: Thales Alenia Space was chosen in 2020 for five of the six new Copernicus Expansion missions, three as prime contractor - CIMR, ROSE-L and CHIME - and will supply payloads for two other missions - CO2M and CRISTAL.
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