Surprising Discovery Challenges Key Principle of Modern Cosmology
Observations of an enormous cosmic structure, dubbed the "Big Ring," seem to violate the Copernican principle.
“Spaghettification”: How Black Holes Stretch Objects into Oblivion
Want to avoid getting “spaghettified” by a black hole? Steer clear of the smaller ones.
Total Solar Eclipse, 2024 Edition
A total solar eclipse crosses North America on Monday, April 8. Be prepared!
Why Interstellar Objects Like ʻOumuamua and Borisov May Hold Clues to Exoplanets
The detection of two celestial interlopers careening through our solar system has scientists eagerly anticipating more.
100 Years after the “Great Debate”: How Edwin Hubble Expanded the Cosmos
In 1924, Edwin Hubble found proof that the Milky Way isn't the only galaxy in the Universe.
Astronomers Use AI to Shed Light on Dark Energy
A new measurement offers insights on the density of the mysterious force driving the Universe’s expansion.
Why TRAPPIST-1 Is Our Favorite Alien Planetary System
The TRAPPIST-1 system is a treasure trove of possibilities and questions. Observations by JWST have just begun.
Ancient Black Hole Challenges Our Understanding of the Early Universe
The Big Bang theory is not threatened, but astrophysicists have some explaining to do.
