|                                                   | We are galaxy stuff |  |  |                            | A new study - based on supercomputer simulations - reveals that each one of us may be made in part from matter that passes from one galaxy to another. |  |  |  | 
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                    |                                                   | Gauging Arctic’s summer sea ice melt |  |  |                            | Last winter, Arctic sea ice extent sank to a record low for the 3rd straight year. NASA is now looking at the summer melt season's impact on the Arctic's oldest, thickest sea ice. |  |  |  |