Fold a piece of paper in half 103 times, and its wider than the observable universe.
this is due to exponential growth; the increase in previous thickness is doubled each time you fold the piece of paper again. physically you could probably only fold a piece of paper about 7 - 8 times on your own.
Given a paper large enough—and enough energy—you can fold it as many times as you want. If you fold it 103 times, the thickness of your paper will be larger than the observable Universe; 93 billion light-years distance.
How can a 0.0039-inch-thick paper get to be as thick as the Universe?
The answer is simple: Exponential growth. The average paper thickness in 1/10th of a millimeter (0.0039 inches.) If you perfectly fold the paper in half, you will double its thickness.
Folding the paper in half a third time will get you about the thickness of a nail.
Seven folds will be about the thickness of a notebook of 128 pages.
10 folds and the paper will be about the width of a hand.
23 folds will get you to one kilometer—3,280 feet.
30 folds will get you to space. Your paper will be now 100 kilometers high.
Keep folding it. 42 folds will get you to the Moon. With 51 you will burn in the Sun.
Now fast forward to 81 folds and your paper will be 127,786 light-years, almost as thick as the Andromeda Galaxy, estimated at 141,000 light-years across.
90 folds will make your paper 130.8 million light-years across, bigger than the Virgo Supercluster, estimated at 110 million light-years. The Virgo Supercluster contains the Local Galactic Group—with Andromeda and our own Milky Way—and about 100 other galaxy groups.
And finally, at 103 folds, you will get outside of the observable Universe, which is estimated at 93 billion light-years in diameters.
The eye of Amal Sofi. Albinism refers to a group of inherited conditions. People with albinism have little or no pigment in their eyes, skin, or hair. They have inherited altered genes that do not make the usual amounts of a pigment called melanin. A common myth is that people with albinism have red eyes. In fact there are different types of albinism and the amount of pigment in the eyes varies. Although some individuals with albinism have reddish or violet eyes, most have blue eyes. Some have hazel or brown eyes. However, all forms of albinism are associated with vision problems.
Humans Already Use Way, Way More Than 10 Percent of Their Brains
It’s a complex, constantly multi-tasking network of tissue—but the myth persists.
By now, perhaps you’ve seen the trailer for the new sci-fi thriller Lucy. It starts with a flurry of stylized special effects and Scarlett Johansson serving up a barrage of bad-guy beatings. Then comes Morgan Freeman, playing a professorial neuroscientist with the obligatory brown blazer, to deliver the film’s familiar premise to a full lecture hall: “It is estimated most human beings only use 10 percent of the brain’s capacity. Imagine if we could access 100 percent. Interesting things begin to happen.” Johansson as Lucy, who has been kidnapped and implanted with mysterious drugs, becomes a test case for those interesting things, which seem to include even more impressive beatings and apparently some kind of Matrix-esque time-warping skills. Of course, the idea that “you only use 10 percent of your brain” is, indeed, 100 hundred percent bogus. Why has this myth persisted for so long, and when is it finally going to die? (via Humans Already Use Way, Way More Than 10 Percent of Their Brains - Sam McDougle - The Atlantic)
"A scientific colleague tells me about a recent trip to the New Guinea highlands where she visited a stone age culture hardly contacted by Western civilization. They were ignorant of wristwatches, soft drinks, and frozen food. But they knew about Apollo 11. They knew that humans had walked on the moon. They knew the names of Armstrong and Aldrin and Collins. They wanted to know who was visiting the moon these days." - Carl Sagan
After traveling four days and more than 238,900 miles, the Lunar Module Eagle began its descent to the surface of the Moon. Very early on, however, it became clear to Aldrin and Armstrong that their telemetry was incorrect as they recognized lunar landmarks were being passed too early. At approximately 6,000 miles above the surface, numerous guidance computer program alarms distracted the crew as they communicated with flight controllers. Mission Control engineers soon reassured the Eagle to continue with the descent as it was determined that their system was being overloaded with extra tasks not necessary to land on the Moon. After looking out of the window a few moments later, Armstrong was forced to take semi-manual control as he noticed that the navigational systems were guiding them towards an area comprised of boulders and an uneven landing surface. This manual override would require Aldrin to call out velocity and altitude data before landing fuel ran out. After a somewhat frantic period, the Lunar Module safely landed on the moon on July 20th, 1969 — with about 25 seconds of fuel remaining.
As an estimated 600 million people watched, Neil Armstrong became the first ambassador of the planet Earth to walk on another world. For over 2.5 hours, he and Buzz Aldrin captured the imagination of our species as they performed various scientific and geological experiments. Along with planting an American flag, a commemorative plaque marking this monumental human achievement was mounted to the Apollo 11 Lunar Module — and remains as a relic of humanity’s first journey on the Moon.
“We came in peace for all mankind. That statement really to me was a very symbolic one — not just of our mission, but of the entire Apollo effort.” - Buzz Aldrin, Apollo 11 Lunar Module Pilot
Apollo 11 was arguably our most exciting adventure, and over the span of three years, NASA sent a total of 12 astronauts to explore the Moon. However, not since 1972 have human beings been beyond low-Earth orbit. Please watch our video, The Spirit of Apollo, and consider what raising the NASA budget will once again do for our society.
Crystals from the lab: This project on Behance is a small collection of the various crystals formed from different compounds in the past few years of research what has been done in the laboratory where I work.
For more adorable picture from crystals, visit: Crystals from the lab on Behance
Many people object to “wasting money in space” yet have no idea how much is actually spent on space exploration. The CSA’s budget, for instance, is less than the amount Canadians spend on Halloween candy every year, and most of it goes toward things like developing telecommunications satellites and radar systems to provide data for weather and air quality forecasts, environmental monitoring and climate change studies. Similarly, NASA’s budget is not spent in space but right here on Earth, where it’s invested in American businesses and universities, and where it also pays dividends, creating new jobs, new technologies and even whole new industries.
To Make A Spacecraft That Folds And Unfolds, Try Origami
“Scientists and engineers at NASA are using origami techniques to help solve a fundamental dilemma facing spacecraft designers: How do you take a big object, pack it into a small container for rocket launch, and then unpack it again once it arrives in space — making sure nothing breaks in the process.”
Learn more from NPR.
Claiming there is no other life in the universe is like scooping up some water, looking at the cup and claiming there are no whales in the ocean.
For decades, flower hat jellyfish managed to keep their early lives a secret.
In adulthood, the jellyfish are striking, with a nest of fluorescent tentacles that look like party streamers, but pack a nasty sting. In infancy, well, scientists didn’t know. Aquarists tried, unsuccessfully, to raise the animals in tanks to understand what happens before the jellyfish are fully grown.
"They just aren’t like other jellies," said Wyatt Patry, senior aquarist at the Monterey Bay Aquarium in California.
Now, Patry and colleagues report they’ve finally raised the jellyfish in captivity. In a new paper, the researchers describe the elusive species’ life cycle, from egg to larva to single-tentacled polyp to juvenile to adult.
Scientists at the aquarium first bought a group of flower hat jellies back from Japan in 2002 for an exhibit on jellyfish. At the time, aquarists tried to mate and culture the species (scientifically named Olindias formosus), but they just couldn’t seem to get the jellies to release any sperm or eggs.
Patry said the researchers tried performing in vitro fertilization and exposing the jellies to stresses that might make them release sex cells. The creatures produced some larvae, but they didn’t grow much larger than that stage. Ultimately, it seemed that the scientists were missing some cue the jellyfish needed for reproduction.
When it came time for another jellyfish show in 2012, the team tried again. They kept groups of flower hat jellies in small tanks with mesh netting to keep the creatures off the bottom, where detritus and rotting pieces of half-eaten fish settled. The scientists don’t exactly know what they did right the second time around, but during routine maintenance, they discovered fluorescent jellyfish polyps attached to the wire mesh and glowing under a blue light.
Jellyfish larvae attach themselves to a solid surface and become stalklike polyps, which then bud into juvenile “medusae” — what jellyfish are called when they reach their most recognizable, umbrella-shaped form. Jellyfish polyps persist for an unknown amount of time. The polyps of flower hat jellies were unusual in that they had a single, highly active tentacle.
"They just look like little sea anemones," Patry told Live Science. "They seem to use the tentacle to sweep around their position to capture food."
Patry hopes the new information might help scientists and wildlife managers look for the species in the wild — and predict when and where “blooms” of the jellyfish could affect beachgoers.
Flower hat jellies kill and eat entire fish, and their venom is powerful enough to inflict a painful rash on humans. The mark looks like a burn, said Patry. (Take it from him. He said he usually gets stung a couple of times a year.) A 2007 review of jellyfish incidents recorded around the world found one death associated with flower hat jellies, in Japan in the 1970s.
The findings on young flower hat jellies were published in June in the Journal of the Marine Biological Association of the United Kingdom.