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The near-Earth asteroid Kamo`oalewa might actually be a fragment of our moon, according to a team of astronomers led by the University of Arizona. Kamo`oalewa is a quasi-satellite – a type of near-Earth asteroid that orbits the sun but remains relatively close to Earth.
Using data from NASA's OSIRIS-REx mission, a UArizona-led team of scientists concluded that asteroids with highly porous rocks, such as Bennu, should lack fine-grain material on their surfaces.
New research into metal-rich asteroids reveals information about the origins and compositions of these rare bodies that could one day be mined.
Using machine learning and simulations of giant impacts, researchers found that planets residing in the inner solar system were likely born from repeated hit-and-run collisions.
NASA and UArizona scientists were able to significantly reduce uncertainties about asteroid Bennu's orbit and determine the likelihood of the asteroid impacting Earth between now and the year 2300.
Scientists have long debated what is under the surface of Mars' south pole. A new study points to clays being more likely than a subsurface lake.
Scientists have reconstructed the history of a dust grain that formed during the birth of the solar system. Their findings provide new insights into the formation of planetary systems.
Infrared astronomy expert Amy Mainzer will lead NASA's NEO Surveyor mission to find, track and characterize yet unseen asteroids and comets that may pose a threat to Earth.
