SpaceX Test Fires Mars Engines

Hawthorne-based SpaceX has test fired the "Raptor" rocket engines it intends to use to take humans to Mars, according to a tweet from Elon Musk over the weekend. SpaceX has not detailed all of the specs on the new engine, which is intended to propel its spacecraft to Mars, as part of SpaceX's longer term goal of getting humans to the red planet.