What is spacex?

SpaceX

Space Exploration Technologies Corporation, or SpaceX, is an American space transport company headquartered in Hawthorne, California. It was founded in 2002 by former PayPal entrepreneur Elon Musk. It has developed the Falcon 1 and Falcon 9 launch vehicles, both of which were designed from conception to eventually become reusable. SpaceX also developed the Dragon spacecraft to be flown into orbit by the Falcon 9 launch vehicle, initially transporting cargo and later planned to carry humans. On 25 May 2012, SpaceX made history as the world's first privately held company to send a cargo payload, carried on the Dragon spacecraft, to the International Space Station.

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Some articles on spacex:

SpaceX - Rocket Engines
... Since the founding of SpaceX in 2002, the company has developed three families of rocket engines — Merlin and Kestrel for launch vehicle propulsion, and the Draco RCS control ... SpaceX is currently under development of two more rocket engines SuperDraco and Raptor ... that Raptor is a higher performance Methane/LOX rocket engine, not an upper stage, and that SpaceX is undertaking a substantial new rocket engine development program for Methane-based engines ...
Demo Sat
... liquid-propelled carrier rocket, the SpaceX Falcon 1 ... The launch, identified as Falcon 1 Flight 4, was conducted by SpaceX, and marked the first time the Falcon 1 rocket successfully achieved orbit, after three consecutive failures ... SpaceX co-founder Elon Musk estimates that Ratsat will remain in orbit for between five and ten years before burning up in the atmosphere ...
STS-129 - Mission Payload - SpaceX COTS UHF Communication Unit and Crew Command Panel
... Unit (CUCU) developed by Space Exploration Technologies (SpaceX) in collaboration with NASA to the ISS ... It will be integrated on the space station in preparation for future SpaceX flights to the orbiting complex ... The unit allows for communication between ISS and SpaceX's Dragon spacecraft via a UHF radio ...
Spaceport America - Operation - SpaceX
... In May 2013, SpaceX announced that they had signed a three-year lease for land and facilities at Spaceport America in order to support high-altitude, high-velocity flight testing of the Grasshopper v1.1 reusable ... SpaceX is using Grasshopper as one-element of a multi-element program to develop reusable boosters and second stages ... Prior to May, SpaceX had indicated that they would do these tests at US Government's adjacent White Sands Missile Range facility ...
Liquid Rocket Propellants - History - Methane
... In November 2012, SpaceX CEO Elon Musk announced a new direction for propulsion side of SpaceX developing methane/LOX rocket engines ... SpaceX had previously used only LOX/RP-1 for all of their primary propulsion engines ...