AAS Nova
August 2026
Diving into the Darkest Corners of the Universe with Fast Radio Bursts ↗
An AAS research highlight of our work on using FRB dispersion measures to trace the Universe's faintest, most diffuse gas in cosmic voids.
Press
Press & science journalism
Coverage of the missing-baryon problem, the origins of magnetars, and (earlier in my career) near-Earth asteroid discoveries.
Caltech
June 2025
Missing Matter in Universe Found ↗
Reports on our Nature Astronomy study using FRBs to locate roughly three-quarters of the Universe’s long-sought “missing” ordinary matter in the diffuse gas between galaxies.
Harvard University / Center for Astrophysics
June 2025
A New GPS for the Intergalactic Medium: Astronomers Have Found the Home Address for Universe's 'Missing' Matter ↗
Harvard's release on the same result, framed around the decades-old "missing baryon problem".
Caltech
November 2024
Mighty Radio Bursts Linked to Massive Galaxies ↗
Covers our Nature paper showing FRBs preferentially occur in massive, star-forming galaxies - evidence that the magnetars thought to power FRBs may form through the merger of two stars rather than a single massive star's collapse.
Nature — News & Views
November 2024
Mysterious radio bursts mostly come from massive galaxies ↗
A News & Views commentary on the same result, explaining why the galactic environments of FRBs are a clue to the origin of magnetars - the extreme, highly magnetized neutron stars thought to produce them.
IIT Bombay
August 2020
IITB students discover closest known asteroid to fly by Earth ↗
Coverage of our role, as a part of the GROWTH-India Telescope team, in discovering and following up the closest-known non-impacting asteroid flyby of Earth.
Caltech
August 2020
ZTF Finds Closest Known Asteroid to Fly By Earth ↗
On the Zwicky Transient Facility's discovery of asteroid 2020 QG, an SUV-sized object that passed roughly 1,830 miles above Earth - the closest known non-impacting asteroid flyby on record at the time.
NASA / JPL
August 2020
Tiny Asteroid Buzzes by Earth - the Closest Flyby on Record ↗
NASA's write-up of the same 2020 QG flyby, including how Earth's gravity visibly bent the asteroid's trajectory during its close pass.
European Space Agency
August 2020
2020 QG, the closest close approach ↗
ESA's coverage of the 2020 QG flyby.
Forbes
August 2020
Our Planet Protected Us. Earth 'Bends' An Asteroid Just 1,830 Miles Out, The Closest Flyby On Record ↗
A general-audience take on the 2020 QG flyby and what it shows about how many small, hard-to-detect asteroids pass close to Earth undetected until the very last moment!