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Gravitational Waves

The newest branch of astronomy doesn’t rely on light. Instead, it measures gravitational waves: tiny ripples in the structure of spacetime created by colliding black holes, neutron stars, or other ...
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The Tilt in our Stars: The Shape of the Milky Way's Halo of Stars is Realized

New data throws out the textbook picture of a spherical stellar halo and reinforces a dynamic origin story of two galaxies that collided billions of years ago. Cambridge, Mass. – A new study has ...
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Billions of Celestial Objects Revealed in Gargantuan Survey of the Milky Way

Cambridge, MA – A new astronomical survey is a portrait of gargantuan proportions. It shows the staggering number of stars bristling among the wispy bands of dust in our home galaxy, the Milky Way.
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M87* One Year Later: Proof of a Persistent Black Hole Shadow

CfA astronomers helped lead a study discovering changes in the bright ring around M87's black hole, confirming the theoretical understanding of the variable and turbulent flow of material around black ...
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First atmosphere detected on a habitable-zone rocky world

In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere surrounding an Earth-like, rocky planet orbiting within the habitable zone of ...
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Astronomers Unveil Strong Magnetic Fields Spiraling at the Edge of Milky Way’s Central Black Hole

CfA astronomers led two new EHT studies that have produced the first polarized light image of the supermassive black hole at the heart of the Milky Way Galaxy. Cambridge, MA--A new image from the ...
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Astronomers Discover New Building Blocks of Complex Organic Matter

The element carbon is a building block for life, both on Earth and potentially elsewhere in the vast reaches of space. There should be a lot of carbon in space, but surprisingly, it's not always easy ...
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Event Horizon Telescope Makes Highest-Resolution Black Hole Detections from Earth

The Event Horizon Telescope (EHT) Collaboration has conducted test observations achieving the highest resolution ever obtained from the surface of the Earth, by detecting light from the centers of ...
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Astronomers Discover Rare Distant Object in Sync with Neptune

This object, called 2020 VN40, is the first confirmed body that orbits the sun once for every ten orbits Neptune completes. Cambridge, MA — A team of astronomers led by the Center for Astrophysics | ...
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New study reveals common pattern of black hole activity shaping nearby galaxies

Cambridge, MA (September 14, 2026) —A new study of nine nearby galaxies has shown that actively growing supermassive black holes may contribute to star formation, instead preventing star formation, in ...
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The Most Precise Accounting Yet of Dark Energy and Dark Matter

Analyzing more than two decades' worth of supernova explosions convincingly bolsters modern cosmological theories and reinvigorates efforts to answer fundamental questions. Cambridge, MA – ...
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'Space Archaeology' Reveals First Dynamic History of a Giant Spiral Galaxy

For the first time, astronomers used galactic archaeology techniques to trace the chemical "fossil record" of a galaxy outside the Milky Way Cambridge, MA (March 23, 2026) — A team of astronomers led ...