Topic: Galaxies & Cosmology
Plasma Bubbles Surround Sources of Fast Radio Bursts

Plasma Bubbles Surround Sources of Fast Radio Bursts

In 2007, a student discovered a really weird thing in archival radio data. David Narkevic was working for Duncan Lorimer and found a 5-millisecond burst of energy in the Radio that appeared to be of extragalactic origin. In the years since then, over 100 of these objects have been discovered, with a few of them repeating on a regular basis. No one had predicted something like this should exist, and figuring out what exactly we’re seeing has been a wild ride. And the ride has not yet reached the end. Based on what we’ve seen so far, the radio bursts are caused by high energy,...

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More Theory-Changing Old Galaxies

More Theory-Changing Old Galaxies

Credit: Cluster image: NASA, UNCOVER (Bezanson et al., DIO: 10.48550/arXiv.2212.04026). Insets: Nasa, UNCOVER (Wang et al., 2023); Composition: Dani Zemba/Penn State Ok, I have to admit, the JWST is finding objects so exceedingly weird that my first reaction is to...

Dark “Stars” or galaxies?

Dark “Stars” or galaxies?

JWST initially identified these three objects (JADES-GS-z13-0, JADES-GS-z12-0 and JADES-GS-z11-0) as galaxies in December 2022. Now a team suggests they might be “dark stars,” theoretical objects powered by particles of dark matter annihilating. Credit: NASA/ESA We...

Found: Galaxies lining up in early universe

Found: Galaxies lining up in early universe

This deep galaxy field from Webb's Near-Infrared Camera shows an arrangement of 10 distant galaxies (white circles) in a diagonal. NASA, ESA, CSA, Feige Wang/University of Arizona and Joseph DePasquale/STScI Currently, a lot of the research we see coming from JWST is...

Found: Time slows with distance

Found: Time slows with distance

Before we go to break, I want to highlight one more piece of news. In a new paper in the journal Nature Astronomy, researchers Geraint Lewis and Brendon Brewer show evidence for time appearing to tick slower in the early universe. According to relativity, as our...