Topic: Galaxies & Cosmology
JWST Catches the Re-lighting of the Universe

JWST Catches the Re-lighting of the Universe

by | Apr 7, 2025 |

There are certain key questions that go hand in hand with mapping the changing nature of Dark Energy.  For instance, we’re looking to the early universe to see when the first galaxies came to light and how fast they and other structures grew into systems we might see in our modern universe. And while DESI, Euclid, and SphereX are out there mapping how structures evolved, it’s JWST that is showing us how they formed. Prior to JWST’s annoyingly early Christmas Day launch - for which I remain bitter - we had thought galaxies started to light up around a billion years after the universe...

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Dark Energy Search Gets Dynamic

Dark Energy Search Gets Dynamic

by | Apr 6, 2025 |

At the beginning of our last episode, I mentioned that we’d just learned that new work by the Dark Energy Spectroscopic Instrument, or DESI, had provided hints that our universe has a changing density of dark energy, but I needed time to look over the research. Well,...

One Star Cluster, 80 Million Pixels

One Star Cluster, 80 Million Pixels

by | Mar 10, 2025 |

Nebula encasing RCW 38 (credit:ESO/VVVX survey) Our modern, highly efficient cameras and massive telescopes allow us to not only do massive surveys, they also allow us to see specific objects in previously unimagined detail. The 4-m Visible and Infrared Survey...

Black Holes Fire Off Cosmos Altering Jets

Black Holes Fire Off Cosmos Altering Jets

by | Oct 16, 2024 |

High-energy jets emerge from two sides of a black hole (illustrated). The black hole resides in a galaxy that is part of a filament of the cosmic web (silvery wisps). E. Wernquist, M. Oei, D. Nelson/IllustrisTNG Collaboration The definition of a black hole allows for...

Invasion of the Microscopic Black Holes

Invasion of the Microscopic Black Holes

by | Oct 15, 2024 |

Image credit: Tech Explorist Every once in a while, a story comes along that just makes me giggle, and also forces me to fix some misinformation living in my brain. Consider the microscopic black hole. In my brain, these diminutive creations of the early universe...

All the Planets Science Can Design

All the Planets Science Can Design

by | Jul 23, 2024 |

Before we go, I just want to take a moment to share something beautiful. Image credit: Martin Vargic Out of the blue, I received an email from artist and infographic designer Martin Vargic, and I have to admit, few random email have been quite so pleasing. He just...