Hubble constant
New Study Examines Cosmic Expansion, Leading to a New Drake Equation
In 1960, in preparation for the first SETI conference, Cornell astronomer Frank Drake formulated an equation to calculate the number…
Check Out This Sneak Peek of the Euclid mission’s Cosmic Atlas
On July 1st, 2023 (Canada Day!), the ESA's Euclid mission lifted off from Cape Canaveral, Florida, atop a SpaceX Falcon…
Gravitational Lens Confirms the Hubble Tension
Astronomers want new ways to measure distance in the Universe, working to calculate its rate of expansion. A new image…
Polaris, Earth’s North Star, Has A Surprisingly Spotted Surface
Humanity's been fortunate to have a star situated over Earth's north pole. The star, known as Polaris, or the North…
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…
Webb Sees a Supernova Go Off in a Gravitationally Lensed Galaxy – for the Second Time
Nature, in its infinite inventiveness, provides natural astronomical lenses that allow us to see objects beyond the normal reach of…
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.…
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
Astronomers Have a New Way to Measure the Expansion of the Universe
A new method of measuring cosmic expansion uses multiple observations of a supernova in a lensed galaxy.