SpaceX's Awesome New Craft, and 'Mega-Earth' Discovered

The video discusses two major space-related topics. First, it covers the discovery of a new class of exoplanet called a Mega Earth, specifically Kepler-10C, which challenges existing theories about planet formation due to its unexpected density and composition. Second, it highlights the unveiling of SpaceX's Dragon V2, the first manned American spacecraft since 2011, which will transport astronauts to the ISS. The video concludes with a call to support SciShow Space.

Discuss the implications of NASA astronauts no longer relying on Russian spacecraft for transportation.

What are the key features of the SuperDraco engine used in the Dragon V2 spacecraft?