Sirius-A is the brightest extrasolar star visible to the naked eye from Earth, being almost twice as bright as the second brightest, Canopus. Sirius-A and Sirius-B combine to form a binary system and appear as one star to the naked eye, though the vast majority of luminosity to the naked eye comes from Sirius-A, Sirius-B being a white dwarf which […]
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Today I found out why black lights make things glow. Black lights are not that different from any other type of light, whether incandescent, fluorescent, or just the age old candle flame. The difference is that black lights emit most of their light waves just outside the range humans can perceive, in the Ultraviolet (UV) part of the spectrum. When […]
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Once regarded by astronomers as a small and relatively insignificant star, the Sun is now known to be brighter than about 85% of the stars in the Milky Way. Contrary to popular belief, it is also white, not yellow, despite being classified as a “yellow” dwarf. Reference
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Amazingly, if we were actually able to convert matter perfectly to energy with 1 kg of matter being completely annihilated, the energy produced from just that small amount of matter is about 42.95 mega tons of TNT. So an adult male weighing in at around 200 pounds has somewhere in the vicinity of 4000 megatons of TNT potential in their […]
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Today I found out why inhaling helium can change the sound of your voice. The physics behind this little phenomenon, practiced in the back corners of parties everywhere, are actually fairly simple. What is going on in the voice tract however is not. The mechanics of a person’s voice is an awesome biological phenomenon born from the need of women […]
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##EMBED## Click Here for Sources and to Learn More Interesting Earth and Sun Facts The energy required to stop the Earth orbiting the sun is about 2.6478 × 10^33 joules or 7.3551 × 10^29 watt hours or 6.3285*10^17 megatons of TNT. For reference, the largest nuclear explosion ever detonated (the Tsar Bomba by the Soviet Union) “only” produced 50 megatons […]
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##EMBED## Click Here for Sources and to Find Out What Moon Dust Smells Like Text Version The gravity on the Moon is about 17% what it is on the Earth. So if you weigh 200 pounds on Earth, you will weigh 34 pounds on the Moon.
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