Ground-based observations suggest the former geostationary inspector satellite suffered a fragmentation event months after retirement, raising new concerns about debris in high Earth orbit.
Observations show that Jupiter's icy moon Europa has a thick icy shell covering a warm ocean. The ocean is chemically-rich, and may have all the essential ingredients for life. That's why Europa is such a juicy target in the search for life, and why NASA's Europa Clipper and the ESA's JUICE are on their way to examine the moon in greater detail.
