Cosmology
Prelude to a Supernova: The James Webb Captures a Rare Wolf-Rayet Star
Massive stars are sprinters. It might seem counterintuitive that stars 100 or 200 times more massive than our Sun could…
The Universe May Have Started with a Dark Big Bang
The Big Bang may have not been alone. The appearance of all the particles and radiation in the universe may…
It Would Take Hubble 85 Years to Match What Nancy Grace Roman Will See in 63 Days
A NASA-led team of researchers created a simulation that demonstrates what the Nancy Grace Roman Space Telescope will see.
The James Webb Is Getting Closer to Finding What Ionized the Universe
Astronomers have determined that so-called "leaky" galaxies may have responsible for triggering the last great transformational epoch in our universe,…
Even the Largest Structures in the Universe Have a Magnetic Field
The cosmic web is filled with magnetic fields, and we are starting to observe them at last.
Clouds of Carbon Dust Seen When the Universe was Less Than a Billion Years Old
A new study shows that carbonaeous dust grains existed much earlier than previously thought, which has significant implications for galactic…
Are Black Holes the Source of Dark Energy?
In a series of papers, an international team claims they've found the first observational evidence that supermassive black holes are…
When Neutron Stars Collide, the Explosion is Perfectly Spherical
Kilonova explosions are almost perfectly spherical, which could help us study cosmic expansion.
Could a Dark Energy Phase Change Relieve the Hubble Tension?
A new study suggests that the Hubble Constant could be resolved by the presence of a "New Early Dark Energy"…
Astronomers Make a New Map of all the Matter (and Dark Matter) in the Universe
There's a lot of matter in the Universe, but not all of it is visible to us. Matter is, essentially,…