Hubble tension
Red Giants Offer a New Way to Measure Distance in the Universe
For nearly three decades now, it's been clear that the expansion of the Universe is speeding up. Some unknown quantity,…
Webb Continues to Confirm That Universe is Behaving Strangely
Over a century ago, astronomers Edwin Hubble and Georges Lemaitre independently discovered that the Universe was expanding. Since then, scientists…
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,…
Astronomers Rule Out One Explanation for the Hubble Tension
Astronomers measure the Universe's expansion rate and have found a discrepancy between the speed nearby versus the speed measured in…
If You Account for the Laniakea Supercluster, The Hubble Tension Might Be Even Larger
When you measure the Universe's expansion rate to relatively nearby galaxies against the expansion rate in the cosmic microwave background…
Colliding Neutron Stars Could Help Measure the Expansion of the Universe
A new study presents a novel and independent method for measuring cosmic expansion using kilonova
It's Going to Take More Than Early Dark Energy to Resolve the Hubble Tension
Astronomers have measured the Universe's expansion rate and found that various methods don't agree, and their error bars don't overlap.…
JWST is the Perfect Machine to Resolve the Hubble Tension
Over the last decade, various measurements have disagreed over the rate that the Universe is expanding. Astronomers use Cepheid variables…
The First Light in the Universe Helps Build a Dark Matter Map
The Atacama Cosmology Telescope (ACT) collaboration used years of cosmic microwave background data to create a new map of Dark…
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"…