OrbitalHub

Wikipedia dixit:

“ExoMars (Exobiology on Mars) Programme is an astrobiology project to investigate the past habitability environment of Mars and to demonstrate new technologies paving the way for a future Mars sample return mission in the 2020s.

The programme is led by the European Space Agency (ESA) in collaboration with the Russian Federal Space Agency (Roscosmos). The programme will search for biosignatures of Martian life, past or present, employing several spacecraft elements to be sent to Mars on two launches. The ExoMars Trace Gas Orbiter (TGO) and a test stationary lander called Schiaparelli were launched on 14 March 2016. The TGO will deliver Schiaparelli lander in 19 October 2016, and then proceed to map the sources of methane on Mars and other gases. The TGO features four instruments and will also act as a communications relay satellite.

The Trace Gas Orbiter (TGO) is a Mars telecommunications orbiter and atmospheric gas analyzer mission that was launched on 14 March 2016. The spacecraft will arrive in the Martian orbit in October 2016. It will deliver the ExoMars Schiaparelli EDM lander and then proceed to map the sources of methane on Mars and other gases, and in doing so, help select the landing site for the ExoMars rover to be launched in 2018. The presence of methane in Mars’ atmosphere is intriguing because its likely origin is either present-day life or geological activity. Upon the arrival of the rover in 2021, the orbiter would be transferred into a lower orbit where it would be able to perform analytical science activities as well as provide the Schiaparelli EDM lander and ExoMars rover with telecommunication relay. NASA provided an Electra telecommunications relay and navigation instrument to ensure communications between probes and rovers on the surface of Mars and controllers on Earth. The TGO would continue serving as a telecommunication relay satellite for future landed missions until 2022.

The Entry, Descent and Landing Demonstrator Module (EDM) called Schiaparelli, is intended to provide the European Space Agency (ESA) and Russia’s Roscosmos with the technology for landing on the surface of Mars. It was launched together with the ExoMars Trace Gas Orbiter (TGO) on 14 March 2016 and will land on 19 October 2016. The lander is equipped with a non-rechargeable electric battery with enough power for four sols. The landing will take place on Meridiani Planum during the dust storm season, which will provide a unique chance to characterize a dust-loaded atmosphere during entry and descent, and to conduct surface measurements associated with a dust-rich environment.

Once on the surface, it will measure the wind speed and direction, humidity, pressure and surface temperature, and determine the transparency of the atmosphere. It carries a surface payload, based on the proposed meteorological DREAMS (Dust Characterization, Risk Assessment, and Environment Analyser on the Martian Surface) package, consists of a suite of sensors to measure the wind speed and direction (MetWind), humidity (MetHumi), pressure (MetBaro), surface temperature (MarsTem), the transparency of the atmosphere (Optical Depth Sensor; ODS), and atmospheric electrification (Atmospheric Radiation and Electricity Sensor; MicroARES). The DREAMS payload will function for 2 or 3 days as an environmental station for the duration of the EDM surface mission after landing”

Video credit: ESA/Roscosmos

ESA dixit:

“Animation visualizing milestones during the launch of the ExoMars 2016 mission and its cruise to Mars. The mission comprises the Trace Gas Orbiter and an entry, descent and landing demonstrator module, Schiaparelli, which are scheduled to be launched on a four-stage Proton-M/Breeze-M rocket from Baikonur during the 14–25 March 2016 window.

About ten-and-a-half hours after launch, the spacecraft will separate from the rocket and deploy its solar wings. Two weeks later, its high-gain antenna will be deployed. After a seven-month cruise to Mars, Schiaparelli will separate from TGO on 16 October. Three days later it will enter the martian atmosphere, while TGO begins its entry into Mars orbit.

[The second animation presents] The paths of the ExoMars 2016 Trace Gas Orbiter (TGO) and the Schiaparelli entry, descent and landing demonstrator module arriving at Mars on 19 October (right and left, respectively). The counter begins at the start of a critical engine burn that TGO must conduct in order to enter Mars orbit. The altitude above Mars is also indicated, showing the arrival of Schiaparelli on the surface and the subsequent trajectory of TGO. The orbiter’s initial 4-day orbit will be about 250 x 100 000 km. Starting in December 2016, the spacecraft will perform a series of aerobraking manoeuvres to steadily lower it into a circular, 400 km orbit (not shown here).”

Video credit: ESA

ESA dixit:

“The European Data Relay System (EDRS) is the most sophisticated laser communication network ever designed. Dubbed the ‘SpaceDataHighway’, EDRS will help Earth-observing satellites to transmit large quantities of potentially life-saving data down to Europe in near-real time.

EDRS consists of two geostationary nodes and an extensive network of European ground and control centres. The first half of the EDRS space segment is a hosted package on a Eutelsat telecom satellite (EDRS-A, at 9° East) and the second is a dedicated satellite using the SmallGEO platform (EDRS-C, at 31° East). The main EDRS Mission Operation Centre is in Ottobrunn (DE) and managed by Airbus. The backup system is in Redu (BE), also managed by Airbus. MOCs manage the data they receive from both the control centres and the users. EDRS has ground stations across Western Europe, with its payload and spacecraft control centres in Oberpfaffenhofen (DE), managed by the DLR German Space Center. The receiving data and feeder link ground stations are in Redu, Harwell (GB), Weilheim (DE) and Matera (IT), and they pass on the information to the satellite owners. Satellite owners can also use EDRS to give their satellites new instructions in near-real time.”

Video credit: ESA

NASA dixit:

“Jason-3, a U.S.-European oceanography satellite mission with NASA participation that will continue a nearly quarter-century record of tracking global sea level rise, lifted off from Vandenberg Air Force Base in California Sunday, Jan. 17, at 1:42 p.m. EST aboard a SpaceX Falcon 9 rocket. Jason-3 is an international mission led by the National Oceanic and Atmospheric Administration (NOAA) in partnership with NASA, the French space agency CNES, and the European Organisation for the Exploitation of Meteorological Satellites.”

NASA JPL dixit:

“Jason-3 is the fourth mission in U.S.-European series of satellite missions that measure the height of the ocean surface. Launched on January 17, 2016, the mission will extend the time series of ocean surface topography measurements (the hills and valleys of the ocean surface) begun by the TOPEX/Poseidon satellite mission in 1992 and continuing through the Jason-1 (launched in 2001) and the currently operating OSTM/Jason-2 (launched in 2008) missions. These measurements provide scientists with critical information about circulation patterns in the ocean and about both global and regional changes in sea level and the climate implications of a warming world.

The primary instrument on Jason-3 is a radar altimeter. The altimeter will measure sea-level variations over the global ocean with very high accuracy (as 1.3 inches or 3.3 centimeters, with a goal of achieving 1 inch or 2.5 centimeters). Continual, long-term, reliable data of changes in ocean surface topography will be generated and will be used by scientists and operational agencies (NOAA, European weather agencies, marine operators, etc.) for scientific research and operational oceanography for the benefit of society.

TOPEX/Poseidon and Jason-1 were cooperative missions between NASA and the French space agency, CNES. Additional partners in the Jason-2 mission included NOAA and Eumetsat. Jason-3 continues the international cooperation, with NOAA and Eumetsat leading the efforts, along with partners NASA and CNES.”

Video credit: NASA

ESA dixit:

“The Sentinels are a fleet of satellites designed to deliver the wealth of data and imagery that are central to the European Commission’s Copernicus programme.

This unique environmental monitoring programme is making a step change in the way we view and manage our environment, understand and tackle the effects of climate change and safeguard everyday lives. It serves European citizens, both directly through its products and applications, and indirectly through social, economic and environmental benefits.

Carrying a suite of cutting-edge instruments, Sentinel-3 will measure systematically Earth’s oceans, land, ice and atmosphere to monitor and understand large-scale global dynamics. It will provide essential information in near-real time for ocean and weather forecasting.

The mission is based on a two identical satellites orbiting in constellation for optimum global coverage and data delivery. For example, with a swath width of 1270 km, the ocean and land colour instrument will provide global coverage every two days.

With a focus towards our oceans, Sentinel-3 measures the temperature, colour and height of the sea surface as well as the thickness of sea ice. These measurements will be used, for example, to monitor changes in sea level, marine pollution and biological productivity.

Over land, this innovative mission will provide a bigger picture by monitoring wildfires, mapping the way land is used, provide indices of vegetation state and measure the height of rivers and lakes – complementing the high-resolution measurements of its sister mission Sentinel-2.

While Sentinel-3 will provide enhanced continuity of satellites such as Envisat and Spot, the sheer breadth of data from this new mission means that it is set to be the workhorse for Copernicus.

The mission is the result of close collaboration between ESA, the European Commission, Eumetsat, France’s CNES space agency, industry, service providers and data users.

As a prime example of Europe’s technological excellence, the two Sentinel-3 satellites have been designed and built by a consortium of around 100 companies under the leadership of Thales Alenia Space, France.

Once commissioned in orbit, ESA and Eumetsat will manage the mission jointly, where ESA processes land products and Eumetsat the marine products for application through the Copernicus services. Data are free of charge and open to users worldwide.”

Video credit: ESA

ESA dixit:

“Liftoff of Vega VV06 carrying LISA Pathfinder from Europe’s Spaceport, French Guiana, at 04:04 GMT/05:04 CET on 3 December 2015. Vega will place LISA Pathfinder into an elliptical orbit around our planet. Then, the spacecraft will use its own propulsion module to raise the highest point of the orbit in six stages. The last burn will propel the spacecraft towards its operational orbit, around a stable point called L1, some 1.5 million km from Earth towards the Sun.

Once on its final orbit, LISA Pathfinder will test key technologies for space-based observation of gravitational waves. These ripples in the fabric of spacetime are predicted by Albert Einstein’s general theory of relativity but have not yet been directly detected.

To demonstrate the fundamental approach that could be used by future missions to observe these elusive cosmic fluctuations, LISA Pathfinder will realize the best free-fall ever achieved in space. It will do so by reducing all the non-gravitational forces acting on two cubes and monitoring their motion and attitude to unprecedented accuracy.”

Video credit: ESA/Arianespace