An H3 rocket is scheduled to launch the Michibiki 6 navigation satellite from Tanegashima Space Center on Sunday during a two-hour window that opens at 3:30 a.m. EST (0830 GMT; 5:30 p.m. local Japan ...

NASA has recorded the most powerful volcanic eruption in history on Jupiter's moon Io. New images acquired by the Juno spacecraft provide insight into the nature of the moon.