Matthew R. Siebert

SN 2022pul offers new insights into supernovae from white dwarf mergers.

2025-09-25T19:16:18+00:00 ― 6 min read

JWST's finding of SN H0pe improves measurements of the Universe's expansion.

2025-08-14T09:54:42+00:00 ― 5 min read

Study reveals new findings about the active galaxy Mrk 817's black hole and outflows.

2025-07-18T12:30:39+00:00 ― 5 min read

Researchers analyze the gas outflows from the active galaxy Mrk 817.

2025-07-14T01:13:39+00:00 ― 5 min read