A standoff detonation of a nuclear device irradiates an asteroid and deposits energy at and beneath the surface. In this work, two neutron yields (50 kt and 1 Mt) and two neutron energies (14.1 MeV and 1 MeV) were the primary case studies compared side-by-side. The black dots represent the […]

This artist’s concept shows the planned flight path of NASA’s OSIRIS-REx spacecraft during its final flyby of asteroid Bennu, which is scheduled for April 7. Credit: ASA/Goddard/University of Arizona NASA’s OSIRIS-REx mission is on the brink of discovering the extent of the mess it made on asteroid Bennu’s surface during last fall’s […]

ANIMATION The near-Earth object was thought to pose a slight risk of impacting Earth in 2068, but now radar observations have ruled that out. After its discovery in 2004, asteroid 99942 Apophis had been identified as one of the most hazardous asteroids that could impact Earth. But that impact assessment […]

This photo shows the view from inside the dome of NASA’s Infrared Telescope Facility during a night of observing. The 3.2-meter (10.5-foot) telescope atop Hawaii’s Mauna Kea will be used to measure the infrared spectrum of asteroid 2001 FO32. Credit: UH/IfA The interplanetary interloper won’t come closer than 1.25 million […]

This artist’s concept shows the planned flight path of NASA’s OSIRIS-REx spacecraft during its final flyby of asteroid Bennu, scheduled for April 7, 2021. Credit: University of Arizona On April 7, NASA’s OSIRIS-REx mission will give asteroid Bennu one last glance before saying farewell. Before departing for Earth on May 10, the OSIRIS-REx […]

Japan’s Hayabusa2 spacecraft snapped pictures of the asteroid Ryugu while flying alongside it two years ago. The spacecraft later returned rock samples from the asteroid to Earth. Credit: JAXA Rocks on Ryugu, a “rubble pile” near-Earth asteroid recently visited by Japan’s Hayabusa2 spacecraft, appear to have lost much of their […]