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高原中おり
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German techblogger (MobilityMagazin.de) and Japan-Enthusiast. You can meet me at several Conventions, Tradefairs or Airports while Planespotting.
German techblogger (MobilityMagazin.de) and Japan-Enthusiast. You can meet me at several Conventions, Tradefairs or Airports while Planespotting.

316 followers
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As seen on #Cosmos: Dark Matter & Dark Energy

Everyday matter that we see around us, for example in tables and chairs, people and even stars, makes up only a few percent of everything in our cosmos. If you could fill a bucket with the mass and energy contents of our universe, this everyday matter would fill only a small fraction. A larger amount, about 24 percent, would consist of dark matter, an invisible substance that does not reflect or emit any light, but exerts a gravitational tug on other matter.

The majority of our universal bucket, about 73 percent, is thought to be filled with dark energy, something even more mysterious than dark matter. Whereas dark matter pulls through its gravity, dark energy is thought to be a repulsive force pushing matter apart. Scientists think dark energy may be responsible for stretching our universe apart at ever-increasing speeds, an observation that earned the Nobel Prize in 2011.

This image shows the distribution of dark matter, galaxies, and hot gas in the core of the merging galaxy cluster Abell 520, as seen by the Hubble Space Telescope.

Image Credit: NASA, ESA, CFHT, CXO, M.J. Jee (University of California, Davis), and A. Mahdavi (San Francisco State University)
#space #nasa #hubble #universe #darkenergy


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ICYMI: Last week, Elon Musk unveiled the Dragon V2 manned spacecraft at SpaceX HQ. Watch the Unveil here: http://youtu.be/yEQrmDoIRO8

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Dragon V2’s revolutionary launch escape system, the first of its kind, will provide escape capability from the time the crew enters the vehicle all the way to orbit. Powered by SpaceX’s new SuperDraco engines, the system will enable Dragon V2 to land anywhere on Earth with the accuracy of a helicopter.

The 8 SuperDracos will produce up to 120,000 pounds of axial thrust, and can be deep throttled during propulsive landing and restarted multiple times if necessary.

And also – they’re 3D printed in Inconel. When Dragon V2 flies, it will be the first time that a printed rocket engine sees flight.
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