One entrepreneur rode his golden parachute all the way into orbit by founding the SpaceX company. If you find yourself stumped by this SpaceX quiz, don't feel bad — it really is rocket science.
Billionaire Elon Musk is the founder of Space Exploration Technologies Corp., commonly known as SpaceX.
SpaceX was founded in 2002 with the initial goal of significantly reducing the cost of building rockets.
The first SpaceX test rocket was named Falcon 1. The first test flight of the Falcon 1 ended in failure when the rocket rolled and plummeted back to earth.
There were three failed launch attempts of the SpaceX Falcon 1 rocket, but on the fourth attempt, Falcon 1 was successfully launched into orbit.
The first five launches of SpaceX Falcon 1 rockets were conducted at the U.S. military's Ronald Reagan Ballistic Missile Defense Test Site on the Kwajalein Atoll in the Marshall Islands.
The successful launch of the fourth flight of Falcon 1 took place on Sept. 28, 2008.
According to the company, there are more than 4,000 employees at the headquarters in Hawthorne, California.
The SpaceX Falcon 1 rockets used a single Merlin rocket engine. The Merlin family of rocket engines are designed and built by SpaceX.
Elon Musk is a co-founder of Tesla Motors. He continues to serve as chairman and CEO of Tesla Motors.
The U.S. Air Force Academy FalconSAT-2 satellite was lost in the failed inaugural launch of SpaceX's Falcon 1. The satellite was built to study enhanced communication with spacecraft.
On May 31, 2012, the SpaceX Dragon became the first commercial spacecraft to deliver cargo to the ISS.
The Falcon 9 rocket is configured with nine Merlin rocket engines in the first stage. The second stage is powered by a single engine.
The Falcon 9 is designed to launch satellites and Dragon spacecraft.
The Dragon spacecraft is designed to carry up to seven crew members. Manned flights of the Dragon are expected by 2018.
The ISS travels at 5 miles per second and orbits the Earth once every 90 minutes, which is about 18,000 miles per hour.
SpaceX is a privately held company. Executives at the company have hinted that the company will remain privately held for many years.
Elon Musk co-founded X.com, which later became PayPal. In 2002 eBay Inc. acquired PayPal for $1.5 billion.
The Falcon Heavy has a payload capacity of 53 metric tons, more than twice the capacity of similar rockets created by other companies.
The secret cargo aboard Dragon during the December 2010 test flight was a wheel of cheese. SpaceX CEO Elon Musk said the cheese was sent in honor of the British comedy "Monty Python's Flying Circus."
The suborbital SpaceX test vehicle used in early flight tests was called the Grasshopper. The Grasshopper was a vertical takeoff/vertical landing, or VTVL, flight test vehicle.
Spacecraft leaving Earth must travel at 7 miles per second or 25,000 miles per hour to get into orbit.
The Falcon 9 rocket generates more than 1.5 million pounds of thrust at sea level. As a comparison, a Boeing 737 produces between 40,000 and 70,000 pounds of total thrust.
The Falcon 9 rocket can carry a payload of 28,000 pounds into Low Earth Orbit.
A Falcon 9 rocket is 70 meters tall and has a mass of nearly 1.2 million pounds (544,311 kilograms).
The Falcon Heavy rocket is fitted with three Falcon 9 engine cores, each one containing nine SpaceX Merlin rocket engines, for a total of 27 engines.
On Dec. 23, 2008, NASA awarded SpaceX a $1.6 billion commercial resupply services contract for 12 deliveries.
Elon Musk named the spacecraft after the fictional dragon in the song "Puff the Magic Dragon" because critics said his goals were impossible when the company started in 2002.
The fleet of SpaceX Falcon rockets were named after the Millennium Falcon in the "Star Wars" movie franchise.
On Dec. 21, 2015, SpaceX successfully launched a Falcon 9, delivered a payload into orbit and vertically landed the first stage of the rocket on Earth.
SpaceX received $2.6 billion for crew transportation to the ISS. SpaceX is one of two companies that have been contracted to build vehicles after the end of the shuttle program.