A new report claims the benefits of legalizing marijuana in New York outweighs the risks.

This show explores the fascinating features of the universe, the different types of galaxies in our solar system and the position of our solar system in the Milky Way Galaxy. Other terminology includes: constellations, spiral galaxy,...

A study of 544 star-forming galaxies observed by the Keck and Hubble telescopes shows that disk galaxies like our own Milky Way unexpectedly reached their current state long after much of the universe's star formation had ceased. Over...

Learn Spanish with "El Mono" - Story 3 - Episode 10 (Basic) - With Pop Ups!

This live-action video program is about the word universe. The program is designed to reinforce and support a student's comprehension and retention of the word universe through use of video footage, photographs, diagrams and colorful,...

This live-action video program is about the word universe. The program is designed to reinforce and support a student's comprehension and retention of the word universe through use of video footage, photographs, diagrams and colorful,...

Jessi is joined by Ruby the dog as they explore the guilty dog look and what it really means.

Black holes are really only dangerous if you get too close. Ha, who am I kidding. It turns out they may be responsible for ending star formation across the entire universe.
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When we first realized that black holes could have...

To understand where we came from—how earth, the solar system, the galaxy became what they are today—we need to understand the beginning of time. For example, how did the first galaxies pull themselves together from the dark...

How many stars are there in the universe? This question leads Hank to a couple other questions - How many stars can we see from Earth? How many stars are there in our galaxy? - but the answer to the original question proves elusive.

The Milky Way is our neighborhood in the universe. It’s a galaxy and there are many others out there. Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular....

Paul Andersen describes our place on the Earth in the Solar System within the Milky Way Galaxy in the Universe. The make-up and origins of the Universe are included along with stellar evolution. A teaching progression K-12 is also...

The world is full of colors. Almost all of them can be described by a wavelength of visible light, but there are some colors out there that are just in your head!

Active galaxies pour out lots of energy, due to their central supermassive black holes gobbling down matter. Galaxies tend not to be loners, but instead exist in smaller groups and larger clusters. Our Milky Way is part of the Local...

As the founder of a startup, Tracy Young often worried that employees and investors valued male CEOs more -- and that being a woman compromised her position as a leader. In this brave, personal talk, she gives an honest look at the...

In the aftermath of a 8 – 20 solar mass star’s demise we find a weird little object known as a neutron star. Neutrons stars are incredibly dense, spin rapidly, and have very strong magnetic fields. Some of them we see as pulsars,...

Our universe started with the Big Bang, but how will it end? Explore cosmologists’ three possible scenarios: the Big Crunch, the Big Freeze and the Big Rip. -- We know about our universe’s past: the Big Bang theory predicts that all...

This video is about the differences between the corpses or final degenerate dense star forms that dead stars take: black holes, neutron stars, and white dwarfs. The main distinguishing features between them are the mass cutoffs...

In which John Green, Hank Green, and Emily Graslie teach you about what happened in the Universe after the big bang. They'll teach you about cosmic background radiation, how a bunch of hydrogen and helium turned into stars, formed...

Population III stars were the very first stars in our universe and far larger than any we can see today. Where are they now?

With so many galaxies in the universe, some are bound to astound us. Here are three of the most extreme galaxies scientists have discovered so far.

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. "Public shaming as a blood sport has to stop," says Monica Lewinsky. In 1998, she says, “I was Patient Zero of...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on causal patterns.


TERMS
Patterns - regularity in
the world
Cause - a thing that gives r
ise to an eventr/>Effect - an event
Relationships -...

The Milky Way is often described as measuring 100,000 light years across and containing the mass of a trillion Suns. But our home galaxy is actually far bigger, and might be much less massive. Astronomers aren't sure what the exact stats...