Cosmology

Webb Sees Globular Clusters Forming in the Early Universe

Picture the Universe's ancient beginnings. In the vast darkness, light was emitted from a particular galaxy only 460 million years…

5 months ago

Baby Stars are Swarming Around the Galactic Center

The vicinity of Sagittarius A* (Sgr A*), the supermassive black hole at the Milky Way's center, is hyperactive. Stars, gas,…

5 months ago

Rotation Curves of Galaxies Stay Flat Indefinitely

In his classic book On the Structure of Scientific Revolutions, the philosopher Thomas Kuhn posited that, for a new scientific…

5 months ago

New Simulation Explains how Supermassive Black Holes Grew so Quickly

One of the main scientific objectives of next-generation observatories (like the James Webb Space Telescope) has been to observe the…

5 months ago

If Gravity Can Exist Without Mass, That Could Explain Dark Matter

Dark Matter is Nature's poltergeist. We can see its effects, but we can't see it, and we don't know what…

5 months ago

Primordial Black Holes Can Only Explain a Fraction of Dark Matter

What is Dark Matter? That question is prominent in discussions about the nature of the Universe. There are many proposed…

6 months ago

The JWST is Re-Writing Astronomy Textbooks

When the James Webb Space Telescope was launched at the end of 2021, we expected stunning images and illuminating scientific…

6 months ago

Some Clever Ways to Search for Primordial Black Holes

Primordial Black Holes (PBHs) have recently received much attention in the physics community. One of the primary reasons is the…

6 months ago

Roman Space Telescope Will Be Hunting For Primordial Black Holes

When astrophysicists observe the cosmos, they see different types of black holes. They range from gargantuan supermassive black holes with…

7 months ago

The World's Largest Digital Camera is Complete. It Will Go Into the Vera Rubin Observatory

The Vera C. Rubin Observatory, formerly the Large Synoptic Survey Telescope (LSST), was formally proposed in 2001 to create an…

8 months ago