Tag: universe

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We Are Dead Stars

We are dead stars. Everything we are – the iron in our blood, every element we've ever heard of – is made from a star, a dust cloud collapsing under the force of gravity. Astronomer Dr. Michelle Thaller si...

How Do We Know How Old the Sun Is?

How Do We Know How Old the Sun Is? The Royal Observatory, Greenwich, and animation studio Beakus join together to explain how Kepler and Newton’s laws help us figure out the weight of the ...

Greek Legacy: How the Ancient Greeks shaped modern mathematics

Travel back in time to Ancient Greece where revolutionary thinkers – from Thales, Pythagoras, Democritus and Aristotle to Euclid, Archimedes, and Hypatia of Alexandria – helped define the rule...

The Beginning of Everything: The Big Bang

From the team at Kurzgesagt, let’s explore what we know about The Beginning of Everything — The Big Bang: Has the universe a beginning or was it here since forever? Well, evidence ...

Dessin sur sable (sand drawings): Evolution of Earth

The universe, underwater creatures, and great dinosaurs come alive in sand. Dessin sur sable (sand drawings) by Jin Lee: Evolution of Earth. via Daily Picks and Flicks.

The Giant Magellan Telescope

In the year 2020, seven of the largest mirrors on Earth — 20 tons each — will come together in a 22-story, rotating building located in the southern Atacama Desert of Chile. They will form the Giant Magell...

Sesame Street: That’s about the size

Classic Sesame Street time: That’s about the size.

The Solar System — our home in space

Take a trip through The Solar System — our home in space in this animation by information designer Philipp Dettmer.

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...

PBS Off Book: The Beauty of Space Photography

Astrophysics Research Scientist Dr. Emily Rice, Hubble Image Processor Zolt Levay, and Astronomer David W. Hogg discuss the mix of technology, data, and inspiration that we use to make images ...

Cosmos: Carl Sagan’s Cosmic Calendar

Imagine that the age of the universe, 13.82 billion years, is compressed into only one year. Carl Sagan explains this idea (using 15 billion years as his example) in a clip from his 1980 television series, Cosmos: A ...

TED Ed: The beginning of the universe, for beginners

Today, TEDxCERN and TED-Ed have unveiled the first of 5 animated lessons specially developed by CERN scientists for TEDxCERN and brought to life by the talented animators at TED-Ed: “The begi...

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...

Why isn’t Pluto a planet anymore?

Why isn’t Pluto a planet anymore? C.P. Grey gives a great animated explanation, with a bit of history and a lot of information about the scale and relationships of the types of planets (...

Measuring 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 ...

The Kepler Mission and a Primer on How We Find Exoplanets

The California Academy of Sciences in San Francisco has created a primer on NASA’s Kepler Mission. Kepler has found over 1200 planet candidates, 54 of them in the habitable or “Gol...

The Violent End Stage of Star Formation

EsoCast showcases a new Hubble image of a giant cloud of hydrogen gas illuminated by a bright young star. The image shows how violent the end stages of the star formation process can be, w...

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