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Sentinel-1 is the first of the Copernicus Programme satellite constellations conducted by the European Space Agency. [4] The mission was originally composed of a constellation of two satellites, Sentinel-1A and Sentinel-1B , which shared the same orbital plane.
Sentinel-1A is a European radar imaging satellite launched in 2014. It is the first Sentinel-1 satellite launched as part of the European Union 's Copernicus programme . The satellite carries a C-band Synthetic Aperture Radar which will provide images in all light and weather conditions.
Sentinel-1B was a European radar imaging satellite launched on 25 April 2016. It is the second of two original satellites in the Sentinel-1 constellation, part of the European Union's Copernicus programme on Earth observation. The satellite carries a C-SAR sensor, capable of providing high-resolution imagery regardless of weather conditions.
This article lists orbital and suborbital launches planned for the second half of the year 2025, including launches planned for 2025 without a specific launch date. For all other spaceflight activities, see 2025 in spaceflight. For launches in the first half of 2025, see List of spaceflight launches in January–June 2025.
Copernicus is the Earth observation component of the European Union Space Programme, managed by the European Commission and implemented in partnership with the EU member states, the European Space Agency (ESA), the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), the European Centre for Medium-Range Weather Forecasts (ECMWF), the Joint Research Centre (JRC ...
The launch of the first satellite, Sentinel-2A, occurred 23 June 2015 at 01:52 UTC on a Vega launch vehicle. [7] Sentinel-2B was launched on 7 March 2017 at 01:49 UTC, [8] also aboard a Vega rocket. [2] Sentinel-2C was launched on 5 September 2024 on the last [9] Vega launch vehicle. [10]
Envisat cost 2.3 billion Euro (including 300 million Euro for 5 years of operations) to develop and launch. [4] The mission has been replaced by the Sentinel series of satellites. The first of these, Sentinel 1, has taken over the radar duties of Envisat since its launch in 2014.
The Sentinel-6 program includes two identical satellites, to be launched five years apart, Sentinel-6 Michael Freilich, which launched on 21 November 2020, [3] and Sentinel-6B, which will launch in 2025. [4] These satellites will measure sea level change from space, which have been measured without interruption since 1992. [5] [6]
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