A star’s mass determines its entire life story, from how it shines to how it dies. For young stars shrouded in dust, getting an accurate mass has long been difficult…but new radio measurements are beginning to change that.
News
3I/ATLAS Contains 30X More Semi-Heavy Water Than Comets In Our Solar System
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) discovered that the interstellar comet 3I/ATLAS is made of an astonishingly high ratio of semi-heavy water relative to water, indicating that its system of origin likely formed under conditions far colder than our own.
Most Close Pairs of Stars Are Born as Cosmic Twins
A new study of infant stars in the Perseus and Orion star-forming regions suggests that most close pairs of stars are born as twins in the same disk, rather than drifting together later from larger distances.
New Director of North American ALMA Science Center Named Fellow of the American Association for the Advancement of Science
As a 2026 AAAS Fellow Pesce is recognized for his leadership in advancing astrophysical research and his commitment to fostering collaboration and innovation within the U.S. astronomical community.