Features the most insightful and informative videos on all areas of the sciences, history, philosophy, and the arts, with an additional focus on the values of Humanism, Freethought and methodological Skepticism.
If there are any freely available programs or shows which you know of that I missed, please let me know about them.
Virtual Star Party - December 1, 2013 - Dying Comets, Smashing Galaxies and Cosmic Bees
Hosts: Fraser Cain and Scott Lewis
Astronomers: Gary Gonella, Roy Salisbury, Steven Coates, Tom Nathe, Stuart Foreman
Topics: Andromeda Galaxy, Venus and Altair, simulations of smashing spiral galaxies, Comet ISON’s current fluffy state after passing the sun thanks to Phil Plait, Pac-Man Nebula, NGC 253, IC 59 - Gamma Cass Nebula in Casseopeia, NGC 7000 North America Nebula, Hydrogen alpha filtering, the Bubble Nebula, Scientific images vs. pretty images, Caldwell 9 - the Cave Nebula.
via Universe Today.
Astronomy Cast Ep. 316: Observational vs Experimental Science
Sometimes you can do science by watching patiently, and sometimes you’ve just got to get your hands dirty with an experiment or two. These two methods have their advantages and disadvantages for revealing Nature’s secrets. Let’s talk about how and why scientists choose which path to go down.
via Astrosphere Vids.
Why Do Satellites Not Collide With Each Other That Often?
With thousands of satellites orbiting earth right now it seems like it would be likely that satellites should be colliding with each other all the time. Images like this don’t help the cause — which are used quite often when showing how cluttered space is. This is an over exaggeration on how cluttered space is with satellites, because the picture suggests that satellites are the size of large towns when most of them are smaller than a football pitch.
A collision with multiple satellites in space is not very safe for us down on Earth. We don’t want things weighing tonnes falling down towards Earth destined for destruction, assuming they don’t hit the ocean which they typically do.
So why do satellites not collide with each other that often? Find out in our latest sciBRIGHT video.
Neil deGrasse Tyson Explains Gravitational Lensing
Can gravity bend space, creating a cosmic “magnifying lens” that could allow us to see further into the universe? Watch astrophysicist Neil deGrasse Tyson explain gravitational lensing, space telescopes & Einstein’s prediction to comic co-host Eugene Mirman in this StarTalk Radio Cosmic Query.
via Star Talk Radio.
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One in Five Sun-Like Stars Have ‘Goldilocks’ Planets
Animation showing how scientists used the Kepler spacecraft to find the prevalence of Earth-size planets in the habitable zone around their host star.
via Video From Space.
Mars Atmosphere Loss: Neutral Processes
When you take a look at Mars, you probably wouldn’t think that it looks like a nice place to live. It’s dry, it’s dusty, and there’s practically no atmosphere. But some scientists think that Mars may have once looked like a much nicer place to live, with a thicker atmosphere, cloudy skies, and possibly even liquid water flowing over the surface. So how did Mars transform from a warm, wet world to a cold, barren desert? NASA’s MAVEN spacecraft will give us a clearer idea of how Mars lost its atmosphere (and thus its water), and scientists think that several processes have had an impact.
Scientists think that the collision of neutral hydrogen molecules may have helped to drive the Martian atmosphere into space over billions of years.
via NASA explorer.
New Dinosaur Discovery! - IFLS
Bacteria absorbing ancient DNA, one of the brightest gamma-ray bursts ever recorded, and evidence of Hominin inbreeding!
It’s Okay to be Smart - Exoplanets: Other Earths
Is Earth the only living needle in this haystack of planets?
We live in one of a hundred billion of galaxies, each with hundreds of billions of stars. And now, thanks to modern astronomy, we know that the Milky Way is home to perhaps a hundred billion planets! In the past two decades, these exoplanet discoveries have spawned new questions about our universe, and if there might be another Earth, or other life, somewhere out there.
In part one of my two-part series on exoplanets, we’ll look at how astronomers find exoplanets, and what it means to call them Earth-like. We also trace the history of planetary science back three thousand years and examine Earth’s changing status in the cosmos.
We were once the center of the universe, and now Earth is just another rock in the sky. What does that mean for us?
How Do Stars Form?
We owe our entire existence to the Sun.
Well, it and the other stars that came before.
As they died, they donated the heavier elements we need for life.
But how did they form?
Stars begin as vast clouds of cold molecular hydrogen and helium left over from the Big Bang.
via Universe Today.
This Week in Engineering 163
World’s largest tunnel-borer
Flying, swimming, driving drone
via Engineering dot com.
Tonight’s Sky: December 2013
Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky.” In December, look for the double-star Eta Cassiopeiae with binoculars, and brave the cold to see the Geminid meteor shower in mid-month.
via Hubble Site Channel.
Voyager’s ‘Interstellar Plasma Music’ Composed By Sun
Voyager 1’s ‘plasma wave instrument’ detects electrons that are excited when solar storms interact with the ionized gas that surrounds it. They occur at frequencies up to a few thousand hertz, so it can be translated to audio via loudspeakers.
Learn more about Voyager 1 http://goo.gl/U5VeAy
via Video From Space.
And Now the Good News №59
via Steve Shives.
SkyWeek December 2 - 8, 2013
Comet ISON will reappear this week if it survives its encounter with the Sun. And the Andromeda Galaxy, the nearest big spiral galaxy to our own, soars high in the evening.
via Sky & Telescope.
Learning Space Ep. 33: Cosmic Castaways
Our hosts Dr. Nicole Gugliucci and Georgia Bracey talk to Dr. John Feldmeier and Dr. Patrick Durrell of the Ward Beecher Planetarium at Youngstown State University (Youngstown Ohio) about their new planetarium show “Cosmic Castaways” which is being made available to small planetaria for free!
via Astrosphere Vids.