Pop Science Associate Editor Mary Beth Griggs explains the mysterious plume that accompanied SpaceX's Falcon 9 rocket launch last week. For full interview [click here](https://cheddar.com/videos/what-made-spacexs-rocket-launch-look-like-an-alien-invasion).

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Hurricane Lee Expected to Grow As It Turns North
Hurricane Lee, still a Category 3 storm with winds of 115 mph, is expected to increase in size but be significantly weaker in the coming days, as it turns north to reach the U.S. East Coast, according to the National Hurricane Center.
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