Image contains modified Copernicus Sentinel data , processed by ESA & Sentinel-1 Mission Performance Centre
From 20 May:
The Sentinel-1A radar satellite detected a slick in the eastern Mediterranean Sea – in the same area that EgyptAir flight MS804 disappeared early morning of 19 May 2016 on its way from Paris to Cairo. Sentinel-1A acquired this image later in the day at 16:00 GMT (18:00 CEST) in ‘extra-wide swath mode’ of 400 km with horizontal polarisation. ESA provided it to the relevant authorities to support the search operations. The 2 km-long slick is located at 33°32′ N / 29°13′ E – about 40 km southeast of the last known location of the aircraft. Although there is no guarantee that the slick is from the missing airplane, this information could be helpful for the search.
ESA’s Description: An unusual view of a spacecraft – looking from below, directly into the thruster nozzles. This is a test version of ESA’s service module for NASA’s Orion spacecraft that will send astronauts further into space than ever before.
The European Service Module provides electricity, water, oxygen and nitrogen, and thermal control as well as propelling the spacecraft.
The large cone is the spacecraft’s main engine, the same model that was used on the Space Shuttle for orbital manoeuvres. The surrounding red cones are auxiliary thrusters. The engines will provide almost 30 kN of thrust, only one-tenth that of a Jumbo Jet engine, but enough to manoeuvre in space. More thrusters are carried on the module’s sides.
This structural test model is used for testing purposes before installing the real thing. It is as close to the flight version as possible while keeping costs and development time manageable. The structure and weight are the same, while mass equivalents stand in for electronics boxes not needed for the series of tests.
The model was installed under a test version of the Crew Module Adapter, and sits on the Spacecraft Adapter that will attach Orion to its launch vehicle. This is the first time the European hardware has been physically connected to NASA’s elements.
The service module will be shaken at NASA’s Plum Brook station in Sandusky, OH.
One day our Milky Way will be in the midst of a similar merger, ours with Andromeda.
The ESA description: The subject of this NASA/ESA Hubble Space Telescope image is known as NGC 3597. It is the product of a collision between two good-sized galaxies, and is slowly evolving to become a giant elliptical galaxy. This type of galaxy has grown more and more common as the Universe has evolved, with initially small galaxies merging and progressively building up into larger galactic structures over time.
NGC 3597 is located approximately 150 million light-years away in the constellation of Crater (The Cup). Astronomers study NGC 3597 to learn more about how elliptical galaxies form — many ellipticals began their lives far earlier in the history of the Universe. Older ellipticals are nicknamed “red and dead” by astronomers because these bloated galaxies are not anymore producing new, bluer, stars in ages, and are thus packed full of old and redder stellar populations.
Before infirmity sets in, some freshly formed elliptical galaxies experience a final flush of youth, as is the case with NGC 3597. Galaxies smashing together pool their available gas and dust, triggering new rounds of star birth. Some of this material ends up in dense pockets initially called proto-globular clusters, dozens of which festoon NGC 3597. These pockets will go on to collapse and form fully-fledged globular clusters, large spheres that orbit the centres of galaxies like satellites, packed tightly full of millions of stars.