Live coverage: NASA’s Juno spacecraft arrives at Jupiter

The brightly lit limb of a crescent Enceladus looks ethereal against the blackness of space. The rest of the moon, lit by light reflected from Saturn, presents a ghostly appearance.

Some of the world’s leading amateur and professional astronomers are meeting on 12-13 May to prepare for a campaign of ground-based global observations in support of NASA’s Juno mission to Jupiter. Delegates from 13 countries in Europe and around the world are meeting at the Observatoire de la Côte d’Azur in Nice, France.

Persistent problems with a seismometer instrument package will keep NASA’s InSight Mars lander from departing for the red planet during a March launch period, and officials said they will consider shelving the $675 million project if the issues prove too costly to fix.