A years-long study that involved scientists and experiments at Berkeley Lab and UC Berkeley concludes that an odd assortment of particles found in beach sands in Japan are most likely fallout debris from the 1945 Hiroshima A-bomb blast.
Astronomers map the substance aluminum monoxide (AlO) in a cloud around a distant young star -- Origin Source I. The finding clarifies some important details about how our solar system, and ultimately we, came to be. The cloud's limited distribution suggests AlO gas rapidly condenses to solid grains, which hints at what an early stage of our solar evolution looked like.
Which of Earth's features were essential for the origin and sustenance of life? And how do scientists identify those features on other worlds? A team of investigators with array of expertise ranging from geochemistry to planetary science to astronomy published this week an essay in Science urging the research community to recognize the vital importance of a planet's interior dynamics in creating an environment that's hospitable for life.
Observers watching January's total eclipse of the Moon saw a rare event, a short-lived flash as a meteorite hit the lunar surface. Spanish astronomers now think the space rock collided with the moon at 61,000 kilometers an hour, excavating a crater 10 to 15 meters across. Professor Jose Maria Madiedo of the University of Huelva, and Dr. Jose L. Ortiz of the Institute of Astrophysics of Andalusia, publish their results in a new paper in Monthly Notices of the Royal Astronomical Society.
A UA-led team of researchers discovered a dust grain forged in a stellar explosion before our solar system was born. Atom-level analysis of the specimen reveals new insights about how stars end their lives and seed the universe with the building blocks of new stars and planets.
A nearby system hosts the first Earth-sized planet discovered by NASA's Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world. This milestone sets the path for finding smaller planets around even smaller stars, and those planets may potentially be habitable.
ASU researcher helps team make surprising discovery that gives clues to how solar system formed
Using the unique capabilities of telescopes specialized on cosmic gamma rays, scientists have measured the smallest apparent size of a star on the night sky to date. The measurements reveal the diameters of a giant star 2,674 light-years away and of a sun-like star at a distance of 700 light-years. The study establishes a new method for astronomers to determine the size of stars, as the international team reports in the journal Nature Astronomy.
An ancient sliver of the building blocks from which comets formed was discovered by a Carnegie-led research team encased inside a meteorite like an insect in amber. The finding, published by Nature Astronomy, could offer clues to the formation and evolution of our solar system.
Metallic asteroids are thought to have started out as blobs of molten iron floating in space. As if that's not strange enough, scientists now think that as the metal cooled and solidified, volcanoes spewing liquid iron could have erupted through a solid iron crust onto the surface of the asteroid.