We take a deep dive into new space legislation working its way through the US Senate. It embraces Mars and NASA's big rocket. But Elon Musk and SpaceX just announced an ambitious new plan to colonize Mars. Does this upset the political establishment? Or will they find a cold reception in the halls of Congress? What about the other Mars plans that are out there? Not to mention the implications for NASA's science programs and the looming Presidential transition.
NASA / MSFC
SLS pierces the clouds
The 70-metric-ton version of NASA's Space Launch System pierces the clouds in this artist's rendering.
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