In this cool video, we learn how black holes are created from the death of massive stars, leaving behind a collapsed star so dense and with such skull-crushing gravity that not even LIGHT can escape it! Here’s a cool fact… if you were floating towards a black hole, the atoms in your feet would accelerate towards it faster than the atoms in your head and so effectively, you would be instantaneously ripped apart. Fun!
Video Source: “The Birth of a Black Hole” Uploaded by Alexander Guseff to YouTube channel www.youtube.com/watch?v=8grTbzAo0PA.
For more totally awesome sciencey stuff – including amazing pictures of space, planet Earth and Earth’s diverse fauna – be sure to check out the Why? Because Science Facebook page. Also, we’re on Instagram now! #awesome!
Many moons ago, Pluto – the outermost planet in our solar system – was demoted. For those of us who grew up with the nine-planet solar system model, this came as somewhat of an affront to everything we knew about anything, ever. I mean, what is the meaning of life if the planetary status of Pluto can so easily be revised and revoked? Why, Neil, why??
In this hilarious video, Neil DeGrasse Tyson answers to the angry rants and raves (and insults) of those really strange people who were truly and deeply wounded by Pluto’s demotion from planetary status to mere space-wandering rock. Why people give such a damn is beyond me. After all, Pluto is only a quarter the size of our moon and even then, most of its mass is ice.
Video Source: Uploaded by National Geographic on YouTube channel https://youtu.be/eBREBAnglr
Neil DeGrasse Tyson is a megamind and, not coincidentally, also curator of the Hayden Planetarium, as well as the presenter of Carl Sagan’s revised TV-series, “Cosmos” He is awesome and anyone who has watched any of his videos, lectures or presentations will appreciate just how erudite and smart this man is.
But by far one of Neil’s greatest talents is the perfect balance between a sophisticated understanding of science and the ability to communicate with those who don’t. This makes him one of today’s most powerful and persuasive public figures in science and technology.
If your horoscope a little out of scope, it’s because you’re reading the wrong one.
This is not really your fault. How are you to know that things have changed in the heavens since the zodiac was assigned to each calendar month just over 2,500 years ago? This is the problem with astrology in the 21st Century. It is the single most ridiculous cluster of notions that have ever been conceived, second only to the idea that womankind was created from the rib of a man. How insulting! If anything, man was created from the rib of a woman. Why else would men have nipples?
On the upside, on issues of astrology and horoscopes, I’ve finally found something I can agree with Christians about.
If you’re keen on these subjects, I am really sorry to burst your bubble. I’m all for esoteric beliefs if it distracts people from judging thy neighbour and killing in the name of You-Know-Who. But the entire rational framework of astrology is completely and inexcusably flawed. This isn’t only from a logical standpoint, but for one very particular reason, which we shall discuss shortly.
First, let’s find out what on Earth our ancient counterparts were thinking…
The Gods are Grumpy
A cluster of ridiculous notions is forgivable of an ancient civilization that has no understanding of the physical world around them and of all its beautiful and intricate macroscopic and microscopic complexity. Back in the day, a sickness was not the result of a virus running rampant in your body: it was a punishment for wrong-doing or an expression of some deity’s dissatisfaction with your most recent sacrifice. Even though said sacrifice was your sister…
Lightning wasn’t an electrical discharge between a negatively charged sky and a positively charged Earth; it was Zeus throwing his toys out the cot. The stars were not balls of intense and unending nuclear reactions held together by gravity, they were the souls of dead people (or fireflies, if you’re a Lion King fan).
Every civilization has sought to explain the physical observable universe using what little bits and pieces of knowledge they had. A few thousand years ago, in the absence of powerful telescopes, super computers, mathematical equations and the cumulative work of tens of thousands of scientists, that knowledge stemmed from tradition, superstition and beliefs that had been passed down from generation to generation.
Scientific these explanations were not.
Meet the Babylonians
Humans are inherently creative and seek symbolism in just about everything around us, so naturally the patterns perceived in the arrangement of stars against the night sky became other people, animals and objects. These constellations were then bestowed with significance over and above their random scattering across the sky.
And who can blame our ancestors? Back in the day there was no TV, so our ancient counterparts looked to the sky for their daily and seasonal weather forecasts; the stars were their GPS. If a decent crop yield depended on you sowing seeds at precisely the right time of year, you too would regard the sky as something sacred and symbolic. Your life could depend on it.
Around 7th century BC, Babylonian astronomers (dudes who puzzled over the sky and made attempts to measure and record the migrations of the stars and planets) divided the constellations that coursed across the Milky Way into the zodiacal signs, which, in Latin, literally means “circle of animals.” Think “zoo.”
Although some of the constellations that make up the zodiac have origins elsewhere and in other times, the Babylonians were the ones who landed the Oscar for incredible breakthrough work in scientific observation, measurement and recording. They were the ones who divided the sky into the co-ordinate system that has largely survived to this day (with subtle modifications and a greater accuracy, of course.)
Each calendar month was assigned a ‘star sign,’ beginning with the constellation that was positioned behind the sun at the time of the spring equinox. This was around March and April in the northern hemisphere. Remember, back in these days, the seasons very much governed the life and times of these people. Spring was an auspicious time of year because your farm animals would start bonking like mad, which was a good thing if you wanted your farm animals to make baby farm animals.
At the time this was all cooked up (just over 2,500 years ago), the constellation that took position behind the sun at the spring equinox was Aries, the ram. Baaa. Every year at the same time, the same star sign would resume its rightful position in the sky.
But the Earth’s movement relative to the stars changes year after year. Every time we make our way around the sun, our aspect is very slightly different thanks to Earth’s wobbly axis of rotation. Just under three millennia later, the constellation positioned behind the sun at the time of the spring equinox is no longer Aries. It’s Taurus.
What does this mean?
The Zodiacal Identity Crisis
What’s your star sign? Libra? Nope! Actually, you’re a Scorpio. When you were born, the constellation positioned behind the sun was Scorpio, not Libra. So all that crap about being sensitive, artistic, fickle and in love with the idea of love blah, blah, is just that: crap. Whatever star sign you thought you were, you are actually one ahead:
Aries’ are Gemini’s
Gemini’s are Cancer’s
Cancer’s are Leo’s
Leo’s are Virgo’s
And so on and so forth.
Everything you’ve ever read about yourself in a horoscope – what kind of person you are, your personality traits, your likes, loves, potential health problems and more – is all fundamentally flawed because you are reading the wrong star sign. Plain and simple. What’s the point in reading the horoscope for, example, Sagittarius when you’re actually a Capricorn? And why don’t astrologers or whoever writes this garbage picked up on this very simple, yet grave error?
My birthday is on the 19th October. Every horoscope I have ever read in any magazine, newspaper or book has told me that my star sign is Libra. But every single one of them has been inaccurate. The constellation behind the sun on the date of my birth is Scorpio, which makes far more sense because I can be quite a bitch.
Class Dismissed: Your Take-Home Message
The idea that the stars and planets play a part in forecasting our future is a very romantic one. It makes us feel very important. But those giant impartial elemental worlds composed of ice, rock, fire and air have about as much to do with your love life as scientology has to do with science.
Sure, those horoscopes you read in People while sitting on the porcelain throne can make sense sometimes. But horoscopes are self-fulfilled prophesies. If Madame Zola tells you that your love life is about to get hot and heavy, you’re immediately primed to see significance where there is none. You regard the world with fresh eager eyes; watching and waiting for your Prince Charming or Pussy Galore (guys) to come and sweep you off of your feet.
The bottom line is: stars are far too busy exploding and being catastrophically nuclear to worry about your office dynamics and how that bitch down the aisle keeps stealing your stapler. The planets couldn’t be less interested in how flaccid your sex life has been recently and the moon couldn’t give two hoots about what colour you should dye your hair next.
Perhaps it’s our innate fear of being ordinary that compels us to seek evidence of our extraordinary nature outside of ourselves – in the relative orientation of the stars and planets – when in fact we already ARE extraordinary.
The “Symphony of Science” series puts together beautiful graphics and music with the autotuned voices of some of the most eminent of modern scientists for us to learn from and enjoy. This video is a visual and audio feast and a beautiful ode to the work of the 20th and 21st century astrophysicists and astronomers.
Also, Niel DeGrasse Tyson is such a rock star. I have a total nerd crush on him.
# 2: A view up Jupiter’s skirts. Here we see Jupiter’s south pole and the many concentric rings that represent the planet’s different atmospheric pressure zones. The transitional areas between these zones feature great instability and are the source of Jupiter’s notoriously vicious and persistent super storms, called “hypercanes.” That’s like a hurricane on steroids. The most famous of these hypercanes is the “Great Red Spot,” which has been raging on for many centuries, although apparently it is decreasing in size.
Image Source: NASA/JPL/Space Science Institute / Via nasa.gov
# 3: Every single dot you see in this picture is a galaxy. Makes you feel small, doesn’t it?
Image Source: NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team / Via hubblesite.org
# 4: Sunrise from Mars. It’s interesting to see the size of the sun from the perspective of Red Planet, as opposed to from Earth.
# 6: When two spiral galaxies collide… the greatest show on Earth (as seen through a super powerful telescope, of course). In a few billion year’s time, our own galaxy is predicted to collide with our closest galactic neighbour, Andromeda.
Image Source: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration