spacetime
The Moon is an Ideal Spot for a Gravitational Wave Observatory
A prestigious pair of astronomers have published a paper recommending that a gravitational wave observatory be built on the far…
Gravitational Astronomy? How Detecting Gravitational Waves Changes Everything
We’ve now had multiple detections of gravitational waves, opening up a whole new field: gravitational astronomy. We talk about the…
What Was Cosmic Inflation? The Quest to Understand the Earliest Universe
The Big Bang was a tremendous theory, but it had a few problems. In 1980 Alan Guth developed the revolutionary…
What Are Cosmic Voids?
We talked about the biggest structures in the Universe, but what about the opposite? The biggest empty spaces in the…
What Happens When Black Holes Collide?
Black holes are the most impressive objects in the Universe, but when happens when they crash into each other is…
Second Gravitational Wave Source Found By LIGO
With the announcement of the second detection of elusive gravitational waves, scientists hope this is just the beginning of a…
How Can Space Travel Faster Than The Speed Of Light?
Cosmologists are intellectual time travelers. Looking back over billions of years, these scientists are able to trace the evolution of…
Don’t Look At Black Holes Too Closely, They Might Disappear
We've come a long way in 13.8 billion years; but despite our impressively extensive understanding of the Universe, there are still…
Astronomers Discover First Mulitiple-image Gravitationally-lensed Supernova
How about four supernovae for the price of one? Using the Hubble Space Telescope, Dr. Patrick Kelly of the University of…
Higgs Boson Threatened The Early Universe, But Gravity Saved The Day
All the physical properties of our Universe - indeed, the fact that we even exist within a Universe that we can…