Ultra-diffuse galaxies (UDGs) have very low luminosities, comparatively few stars, and little star-formation activity as compared with normal galaxies of similar sizes. Commonly found in ...

Cambridge, MA -- The 2020 Decadal Survey for Astronomy and Astrophysics has recommended a new series of three Great Observatories — or space-based telescopes — as a top national priority ...

On Thursday, November 4, the National Academy of Sciences released the 2020 Decadal Survey, Pathways to Discovery in Astronomy and Astrophysics for the 2020s. The report identifies the mo...

Planets and their stars form from the same reservoir of nebular material and their chemical compositions should therefore be correlated but the observed compositions of planets do not mat...

Cambridge, MA -- Signs of a planet transiting a star outside of the Milky Way galaxy may have been detected for the first time. This intriguing result, using NASA's Chandra X-ray Observat...

Cambridge, MA -- Collectively clocking in at nearly 60 trillion particles, a newly released set of cosmological simulations is by far the biggest ever produced. The simulation suite, dub...

A "massive" black hole (MBH) is one whose mass is more than about one hundred thousand solar-masses. MBHs reside at the centers of most galaxies, and when they actively accrete gas and du...

Joseph Farah, a first-year PhD student at the University California, Santa Barbara, and rising researcher with the Event Horizon Telescope, (EHT) has received the American Physical Societ...

The planets of the solar system all orbit the Sun more-or-less in a plane. Compared to the Earth's orbit, which defines the plane at zero degrees, the orbit with the largest angle is Merc...

Cambridge, MA --In October 2019, a high-energy neutrino slammed into Antarctica. The neutrino, which was remarkably hard to detect, piqued astronomers’ interest: what could generate such ...