After a solar storm powerful enough to knock out power grids and satellites nearly hit Earth two years ago, Dr. Lika Guhathakurta discusses the chances of another solar event happening again with TODAY s Lester Holt.
NBC special correspondent Jay Barbree joins TODAY to talk about his new book, Neil Armstrong: A Life of Flight, which offers an inside look and never-revealed details about the first man to walk on the moon.
The ship splashed down in the Pacific Sunday after its third re-supply mission to the International Space station.
Although the US and Russia have cooperated in space for decades, the conflict in Ukraine appears to be taking its toll.
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