On this day in 2011, Juno began its journey to Jupiter. After an almost five-year journey, the spacecraft successfully entered Jupiter’s orbit, and has since been investigating the planet's origins, interior structure, deep atmosphere and magnetosphere.

During the Mercury, Gemini, and Apollo missions, one of NASA’s concerns was the safety of its crews, something it monitored rigorously through the use of biomedical instrumentation. As initial flight planning commenced in 1959, biomedical equipment capable of transmitting from space did not exist. NASA quickly brought together medical staff and hardware engineers to develop biomedical technology.

This past summer I had the opportunity to operate the world’s largest single-dish telescope at the Arecibo Observatory in Puerto Rico.

Claudia Alexander was perhaps not well-known to the general public, but within the space and science community she was a valued colleague and friend whose contribution to the field of space exploration was significant and lasting.

Much of the Moon is blanketed by a thick layer of dust, built up from the rocky surface over billions of years by the impacts of small meteorites. Hidden beneath the dust is evidence of ancient geologic activity – great volcanic eruptions, tectonic shifts in the crust, and vast deposits of once-molten material hurled outward during the formation of the giant impact basins.