When Edwin Hubble observed that distant galaxies are speeding away from us in all directions, he discovered the reality that we live in an expanding Universe. Hubble worked to calculate exactly how fast this expansion is happening, creating the Hubble constant – which astronomers continue to refine and reference in their research.
Click here to download the episode.
Or subscribe to: astronomycast.com/podcast.xml with your podcatching software.
“Hubble Constant” on the Astronomy Cast website, with shownotes and transcript.
And the podcast is also available as a video, as Fraser and Pamela now record Astronomy Cast as part of a Google+ Hangout:
Recent Posts
ALMA Detects Hallmark “Wiggle” of Gravitational Instability in Planet-Forming Disk
According to Nebula Theory, stars and their systems of planets form when a massive cloud…
Largest Dark Matter Detector is Narrowing Down Dark Matter Candidate
In 2012, two previous dark matter detection experiments—the Large Underground Xenon (LUX) and ZonEd Proportional…
Could Comets have Delivered the Building Blocks of Life to “Ocean Worlds” like Europa, Enceladus, and Titan too?
Throughout Earth's history, the planet's surface has been regularly impacted by comets, meteors, and the…
There’s More Water Inside Planets Than We Thought
When you walk across your lawn or down the street, you move on the surface…
Why Did Copernicus Reject Geocentrism?
Popular science history paints a picture of the Greek geocentric model dominating astronomical thought beginning…
China Will Launch its Mars Sample Return Mission in 2028
While NASA's Mars Sample Return mission has experienced a setback, China is still moving forward…