The European Space Agency's (ESA) Hera spacecraft is now assembled ahead of its journey to analyze the asteroid smashed by NASA's DART mission.
ESA is now preparing its contribution to the DART international planetary defense experiment, Hera, which will follow up on the aftermath. The two modules of the Hera spacecraft were recently mated at the facilities of the technology company OHB in Bremen, Germany, in a three-hour process.
"Previously we had these two modules; now you can say the spacecraft has been born," Paolo Martino, Hera system engineer, said in a statement.
"Next we will be adding some payload units to the spacecraft's top deck, which we are receiving directly from the manufacturers once Hera moves to its next stop," Martino said.
Hera will be transported to ESA's ESTEC Test Centre in the Netherlands. There it will undergo an environmental test campaign as part of flight-readiness checks.
Hera will use a lidar ("light detection and ranging") sensor, an optical camera and a composition-revealing thermal camera to survey the asteroid system. A pair of cubesats, named Juventas and Milani, will join Hera. The former will carry a tiny radar payload to provide a glimpse inside Dimorphos, while Milani will make near-infrared observations of the two rocks' surfaces.
While Hera has finally come together, space-based observations have shown the degree to which Dimorphos came apart after NASA's high-velocity intervention. Observations by the Hubble Space Telescope, for example, reveal that the kinetic impact unleashed a chaotic cloud of boulders.
Get the Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!
Andrew is a freelance space journalist with a focus on reporting on China's rapidly growing space sector. He began writing for Space.com in 2019 and writes for SpaceNews, IEEE Spectrum, National Geographic, Sky & Telescope, New Scientist and others. Andrew first caught the space bug when, as a youngster, he saw Voyager images of other worlds in our solar system for the first time. Away from space, Andrew enjoys trail running in the forests of Finland. You can follow him on Twitter @AJ_FI.