Now that the Juno spacecraft is in orbit around Jupiter, NASA’s science team will spend a few months performing final tests before beginning its unprecedented close-up investigation of the biggest planet in the solar system. Jupiter holds many secrets that scientists hope to unlock during Juno’s 20-month exploration of the gas giant, including: How much water is in Jupiter’s atmosphere? (That could shed light on how the planet was formed.) What, exactly, is the composition of those incredible cloud bands and storms that encircle the planet? Is there an actual solid planetary core of any type at Jupiter’s central inner environment? Learning how Jupiter formed will answer many questions about the processes that created our entire solar system. But there’s one very special thing about the Juno mission that NASA has designated its highest priority: At all costs, Jupiter’s moon Europa must be protected from any mishaps or contamination that could negatively affect the icy moon’s habitability ― or even any current forms of life that may exist there. The following NASA video shows why scientists believe life may exist on the ocean moon. In the late 1990s, NASA’s Galileo spacecraft transmitted information and images about Europa ― close in size to Earth’s moon ― that indicated to scientists there’s likely an ocean underneath that moon’s frozen surface. “We know that life needs four things: it needs water; it needs an energy source (which, on Earth, is sunlight); and it needs food; the last thing it needs is a stable environmentRead more..