Hawking radiation was first discovered by English scientist Stephen Hawking in 1974. Prior to this discovery, our knowledge of black holes was very limited. It was believed that black holes were completely black and that they did not...

Heat death of the universe, also called The Big Chill or Big Freeze, will happen when the entropy of the universe will be so high that everything and everyone that lives in it will perish. This will happen because an organism living in...

The Higgs boson is a wave, ripple or disturbance in an invisible, all-permeating field called the Higgs field. In the year 1964, Peter Higgs, François Englert and four other scientists proposed a rather unique idea to explain why certain...

Dark matter is an invisible matter that occupies more than half of the space of the observable universe but cannot be detected directly as it doesn’t interact with electromagnetic radiation, like visible light and gamma rays. One of the...

The concept of the cosmic calendar was popularized by famous astronomer Carl Sagan to help people understand just how far apart on a time scale events in the Universe are. Basically, he arranged the 13.8 billion years of the Universe’s...

Light is affected by black holes because of the theory of general relativity, which states that any massive object warps the spacetime around it. Since a photon travels by the shortest distance between two points, light appears to bend...

A Boltzmann brain is not real, but what’s fascinating about it is that it thinks it’s real, and all the memories and experiences it has are real. But, of course, this brain is not real. But how would such a brain know that its...

Space is filled with countless stars, all of which radiate enormous amounts of heat. These stars are tens of thousands of times bigger than our own sun. Still, space is considered to be cold. Why is that? If there are so many hot burning...

Meet Aelita Andre, a young abstract painter from Melbourne who started painting at nine months old and has sold works globally, challenging critics and carving her own path in the art world.

In this video, Nova takes kids on an adventure to discover the universe of good values and good manners. Through exploring the concept of responsibility, Nova teaches children the importance of taking care of their duties and helping...

Seven researchers at the front lines of knowledge share candid glimpses into their motivations, passions and frustrations. This interdisciplinary TOK (Theory of Knowledge) Sampler provides real-world examples of the relevance...

From ancient civilizations to modern breakthroughs, learn about the nine most important cosmic discoveries that changed the way we look at our Sun, Moon and beyond. Learn how Copernicus challenged the status quo, Kepler unveiled the...

Remember those old space movies where spaceships had to maneuver through a bunch of asteroids scattered around and blocking the path of the ship? Well, that's not really true. The asteroid belt contains asteroids which are so far apart...

The study of the Universe as a whole, rather than specific stars or celestial bodies.
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A positively charged particle found in the nucleus of all atoms.
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Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

A theoretical curvature in space-time that would directly link two points in the Universe, and in theory provide a means of time travel.
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The formation of atomic nuclei from neutrons, protons and smaller nuclei.
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A Twig Science
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Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

Everything that exists. All physical matter and energy and the contents of the space between galaxies.
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A Twig Science
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A mysterious energy field present across the entire known Universe, which accounts for 70% of its mass-energy.
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A Twig Science
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The most widely accepted theory for the origin and development of our Universe.
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Believed to make up most of our Universe, we cannot see dark matter, and nobody knows what it is.
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Key scientific terms defined in just 60 seconds using stunning images and concise...

How did previous generations of scientists think of the Universe, and how has that understanding changed over time?
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When we look at distant stars, we are looking back in time. What is a light year, how is it measured and why do we measure distance in terms of time?



Physics - Universe - Learni

ng Points.

Light travels...

Find out what these two principal laws explain about the way energy can and cannot be used throughout the entire Universe. Physics - Energy And Radioactivity - Learning Points. The 1st law of thermodynamics states that energy can neither...