Topic: galaxies

Sort: Date | Title | Sort Ascending
View:

How do we study the stars & how do we measure extreme distances?

How can we know so much about other galaxies? What are they made of? How big are they? How far away are they from Earth? "Want to know the secrets of the universe? Just follow the light." These two TED Eds fro...

Laniakea: Our home supercluster

Our home planet, Earth, circles the sun. The sun, our star, is but one of billions of stars in the Milky Way, our home galaxy... and beyond that? Where on the map of the cosmos is the Milky Way? For the first time, we...

The Hubble Ultra Deep Field in 3D

In 1996, and again in 2004, astronomers pointed the Hubble Telescope at what seemed to be completely empty patches of sky — no planets, stars, or galaxies that we could see. What would w...

The Large and Small Magellanic Clouds

Via kqedscience, this is a tour of two of our closest galaxies: the Large and Small Magellanic Clouds. They are between 163,000 and 200,000 light-years away and hold a few hundred million sta...

NASA: Computer Model Shows a Disk Galaxy’s Life History

This cosmological simulation follows the development of a single disk galaxy over about 13.5 billion years, from shortly after the Big Bang to the present time. Colors indicate old stars (r...

Royal Observatory, Greenwich: How do we measure the universe?

From the Royal Observatory, Greenwich, Measuring the Universe! So how exactly do we measure things that are incredibly far away? Positioning over time, light, and math, math, math! This video contains a lot of informa...

Alien Matter in the Solar System

“Alien matter" detected by a NASA spacecraft orbiting Earth shows that the chemical make-up of our solar system differs from that of the surrounding galaxy. 

The Bolshoi Simulation (2011)

The Bolshoi Simulation is the most accurate large-scale visualization/ simulation of the universe that exists (2011). It’s mapped everything that we know of, and a lot of what we don’...