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Planetary ScienceHayabusa2 just tried to collect asteroid dust for the first time
The Japanese Hayabusa2 spacecraft touched down on asteroid Ryugu and attempted to gather a sample of its rock to bring back to Earth.
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AstronomyColliding neutron stars shot a light-speed jet through space
A stream of particles created in a neutron star crash, detected in 2017 using gravitational waves, could explain certain mysterious flashes of light.
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AnthropologyAfrican hominid fossils show ancient steps toward a two-legged stride
New Ardipithecus ramidus fossils reveal how hominids were shifting toward humanlike walking more than 4 million years ago.
By Bruce Bower -
PhysicsSupernovas show the universe expands at the same rate in all directions
Analyzing supernovas indicates that expansion rates agree within 1 percent across large regions of sky.