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Dragon. Cygnus. What’s the Difference?

14 Nov 2017, 18:08 UTC
Dragon. Cygnus. What’s the Difference?
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Uber, Lyft. Both are rideshare services. Why do some people use one or the other? It’s typically differences like service availability, pricing variations, or car/driver personalities.
Dragon, Cygnus. Both are rides to the International Space Station (ISS), so why do some payloads fly on one and not the other? Are they really that different? Does one have a furry pink mustache on the grill and the other doesn’t?
For a researcher flying a microgravity payload to the ISS, it’s good to know the similarities and differences when working with a payload developer. Here are some background, stats, and capabilities that can help clarify which may be the best one for your rideshare to space!

Orbital ATK Cygnus
Cygnus is an expendable cargo spacecraft currently launching to the ISS and was developed by Orbital Sciences ATK headquartered in Dulles, Virginia. Orbital ATK is a commercial company contracted by NASA through its Commercial Orbital Transportation Services (COTS) and Commercial Resupply Services (CRS) agreements to design, build and fly Cygnus. Orbital ATK was recently awarded a portion of the second phase of CRS, called CRS-2, to fly cargo to the ISS at least until 2014.
Nine Cygnus spacecraft have been launched ...

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