What if we fill a crater on the moon with water? Can we create a lake on the moon? Would the water stay in this artificial lake?
Category Archives: Physics
LightSail 2 raised its orbit using sunlight alone
The Planetary Society has announced that the LightSail mission is a success and LightSail 2 just raised its orbit around Earth using sunlight alone on their Twitter account @exploreplanets.
How Earth Could Die [12 Horrible Ways!]
Now we’re living on a warm, hospitable planet. As Carl Sagan has said “That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives.” We, humans, are the unquestionable rulers of our little oasis in a hostile universe. But …
The Melting Points of 80 Elements, Substances, and Metal Alloys
Have you ever wondered why plastic melts in a bonfire, but a cast iron pan doesn’t? A bonfire can reach temperatures as hot as 2,012 °F (1,100 °C). Most PET plastic melts at a measly 491 °F (255 °C), so it doesn’t stand a chance! Cast iron prevails with an average melting point of 2,100 …
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Timelapse of the future [an amazing video!]
Melodysheep published an amazing video titled “Timelapse of the future: a journey to the end of time”. This experience takes us on a journey to the end of time, trillions of trillions of years into the future, to discover what the fate of our planet, our sun, and our universe may ultimately be. If this …
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Is Evolution “just a theory”?
I recently saw a question on Quora and it was like that: “Why is it called the ‘theory of evolution’ but the ‘law of gravity’?” This question is strongly related to a common misconception about evolution: “It is just a theory” – creationists always say “Evolution is just a theory”.
How many great minds does it take to invent a telescope?
On 11 January 1672, the Fellows of the British Royal Society were treated to a demonstration of Isaac Newton’s reflecting telescope, which formed images with mirrors rather than with the lenses that had been used since the time of Galileo. Afterward, the fellows hailed Newton as the inventor of this marvelous new instrument, an attribution …
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Solar Panels work by absorbing LIGHT from the sun, not heat
Ignorance is a very, very bad thing. Last week, as North America suffering from extreme cold weather because of a phenomenon called “polar vortex“, Jim Hoft, founder of the American far-right news and opinion website The Gateway Pundit has tweeted that: “It’s a bit cold outside this morning in middle America… Aren’t you glad you …
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Speed of Light [perfect visual explanations]
The speed of light is the Universal speed limit – nothing can travel faster than light. In the vacuum (commonly denoted c), its exact value is 299,792,458 meters per second (around 186,000 miles per second). In other words, if you could travel at the speed of light, you could go around the Earth 7.5 times …
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Astronauts demonstrate Newton’s second and third laws of motion
A microgravity environment is a perfect place to demonstrate basic physics, i.e. Newton’s laws of motion. In the videos published by the NASA Johnson channel, astronauts aboard the International Space Station (ISS) just do that.
