Ratsat, or DemoSat, was a 165-kilogram (363-pound) non-functional boilerplate spacecraft used as a mass simulator on the fourth flight of the Falcon 1 rocket.
Ratsat was carried to orbit on the first successful orbital launch of any privately funded and developed, liquid-propelled carrier rocket, the SpaceX Falcon 1.
The launch, identified as Falcon 1 Flight 4, was conducted by SpaceX, and also marked the first time the Falcon 1 rocket successfully achieved orbit, after three consecutive failures on the three previous launch attempts.
Ratsat remained bolted to the second stage of the carrier rocket after reaching low Earth orbit. It has a hexagonal prism shape, 1.5 m (5 ft) long. SpaceX co-founder Elon Musk estimates that Ratsat will remain in orbit for between five and ten years before burning up in the atmosphere.
When the fourth flight was first announced in August 2008, shortly after the third flight failed, it was planned for launch in September. The rocket that was used to conduct the test flight was originally built to launch the RazakSAT satellite. The test flight was introduced into the launch schedule because Astronautic Technology Sdn Bhd (ATSB) required a successful flight to be conducted before RazakSAT could be launched.
We'll be young forever
We'll be young forever
We can be like prisoners
And we can be alone
We can make a mess like no one knows
And risk it on our own
Spendin' the money that we don't have
Cause we don't care no
Livin' like kings with broken strings
And bass down to the floor
Livin' with our headphones up
We got sound and that's enough
Nobody can touch us
And we run and we run and we run
Hey hey we'll be young forever
We'll be young forever till forever stops
We're singing
Hey hey we'll be on forever
Tonight we'll last forever till our bodies drop
We can run through the night
Write our name up in the sky
Got the music on our side
Ain't nobody gonna catch us singin'
Hey hey we'll be young forever
On the run forever and we'll never stop
(Don't stop, don't stop now)
Look at us look at us we'll take the whole world by surprise
Million dollar- mind set in place you can see it in our eyes
Everything here is ours to take, so come and take your side
Livin' like kings with broken strings
And the bass so sympathized
We can turn the speakers up
Cause we got sound and that's enough
Nobody can touch us
And we run and we run and we run
Hey hey we'll be young forever
We'll be young forever till forever stops
We're singing
Hey hey we'll be on forever
Tonight we'll run forever till our bodies drop
We can run through the night
Write our name up in the sky
Got the music on our side
Ain't no body gonna catch us singin'
Hey hey we'll be young forever
On the world forever and we'll never stop
(Don't stop, don't stop now)
Ohoah
Ohoah
We're gonna rule the world tonight
Ohoah
Ohoah
The beat of the Drums Keep us alive
(Tonight will last forever till our bodies drop)
Hey hey we'll be young forever
We'll be young forever till forever stops
We're singing
Hey hey we'll be young forever
Tonight we'll run forever till our bodies drop
We can run through the night
Write our name up in the sky
We can run run run away
(Nobody gonna catch us)
Ain't no body gonna catch us singin'
Hey hey we'll be young forever
On the run forever and we'll never stop
(Don't stop, don't stop now)
We can run run run away