http://www.techradar.com/news/spacex-test-fires-falcon-heavy-paving-way-to-send-elon-musks-tesla-into-mars-orbit

Image credit: SpaceX

SpaceX's Falcon Heavy rocket uses power that hasn't been seen since the ambitious early days of space exploration in the 1960s and '70s, and today viewers around Cape Canaveral's historic LC-39A launch site got to see it in action during a static test fire.

All of Falcon Heavy's 27 Merlin engines blasted almost simultaneously for around 12 seconds for the test, creating an awe-inspiring show for onlookers. It's the first time that SpaceX has tested anything with this sort of power.