Live launch coverage from Kazakhstan begins at 14:45 UTC (10:45 a.m. EDT). You can also watch the spacecraft dock with the ISS, starting at 21:15 UTC (5:15 p.m. EDT). Translate to your timezone.
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.
The Delta Aquarids are peaking. And the 2017 Perseid meteor shower gets rolling around now, too. Meteors are beautiful! Kelly Dreller in Lake Havasu City, Arizona caught this one in late July of 2016.