New Horizons scientists puzzled by lack of a 'light curve' from their Kuiper Belt flyby target
Friday, December 21, 2018 - 10:20
in Astronomy & Space
NASA's New Horizons spacecraft is bearing down on Ultima Thule, its New Year's flyby target in the far away Kuiper Belt. Among its approach observations over the past three months, the spacecraft has been taking hundreds of images to measure Ultima's brightness and how it varies as the object rotates.