Enlarge / A human relative left these five tracks in a 3. 6 million-year-old layer of sediment at the Laetoli Fossil site in Tanzania. (credit: McNutt et al. 2021) The first evidence of human relatives walking on two feet comes from about 70 footprints left by at least two Australopithecus afarensis walking across soft volcanic […]
Enlarge / Atlas V with the Lucy spacecraft aboard an SLC-41 on the morning of October 15 as media set their sound-activated remote cameras. (credit: Trevor Mahlmann) Less than five years have gone by since NASA selected the “Lucy” mission for development as part of its Discovery Mission program, and now the intriguing spacecraft is […]