... astronomers observed Hygiea’s surface with a 95 percent coverage, they could only identify two unambiguous craters. “Neither of these two craters could have been caused by the impact that originated the Hygiea family of asteroids whose volume...
...stuck together. Meanwhile, while investigating Arrokoth’s smooth, lightly cratered surface, John Spencer, a project scientist on New ... the relative lack of impacts on the object’s body crater infers Arrokoth has a surface age of about 4 billion...
... reported the discovery of an intriguing group of organic compounds found by the Curiosity rover in dried-up mud in the Gale Crater. Because sediment patterns show that a lot of water was present, continually, over many millions of years in Gale...
...the impact and material kicked up from the moonlet and will attempt to photograph the crater caused by the impact through the haze of any ejecta that may get in the...and its internal structure, as well as the size and shape of the crater left by DART.
...chapters that cover the programme from training in Meteor Crater to exploring the Moon itself; in between, we ... astronauts hiking through Grand Canyon, explosives engineers creating mock crater fields and astronomers mapping the Moon. We even discover...
...days earlier in the 103-mile-wide (166-kilometer-wide) Gusev Crater on the other side of Mars. Spirit logged almost 5 miles... as steep as 32-degrees (an off-Earth record), probe crater floors, summit hills and traverse possible dry riverbeds. Its final...