Cosmology
Measuring Distances in the Universe With Fast Radio Bursts
Astronomers still aren't entirely sure what causes fast radio bursts, which can briefly release a galaxy's worth of energy. However,…
Gravitational Waves Could Show us the First Minute of the Universe
Astronomers routinely explore the universe using different wavelengths of the electromagnetic spectrum from the familiar visible light to radio waves…
If Our Part of the Universe is Less Dense, Would That Explain the Hubble Tension?
In the 1920s, Edwin Hubble and Georges Lemaitre made a startling discovery that forever changed our perception of the Universe.…
If We Could Find Them, Primordial Black Holes Would Explain a Lot About the Universe
As far as we know, black holes can only be formed by the death of massive stars, but a persistent…
Everything in the Universe Fits in This One Graph. Even the Impossible Stuff
The Universe has physical constants, such as the force of gravity that define everything. If these constants were any different,…
A Fast Radio Burst Took 8 Billion Years to Reach Us
A newly discovered fast radio burst (FRB) absolutely smashed the record for the most distant ever discovered. The burst was…
The Big Bang: What is it? Why study it? What happened before? How will it all end?
Approximately 13.8 billion years ago, the greatest event in all of existence occurred that literally created existence itself. This event…
A New Telescope Could Detect Decaying Dark Matter in the Early Universe
A gap in astronomical knowledge is Cosmic Dawn, a time when the first stars in the Universe formed, ending the…
New Horizons is So Far Away, it Can Measure the True Darkness of the Universe
NASA's New Horizons Spacecraft has completed its flybys of Pluto and Arrakoth and is now about 8 billion kilometers from…
Did the Pulsar Timing Array Actually Detect Colliding Primordial Black Holes?
With last week's announcement of the gravitational wave background detected by timing arrays, the assumption was that these are the…