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Neil deGrasse Tyson - We Stopped Dreaming (Episode 1)

Neil deGrasse Tyson - We Stopped Dreaming (Episode 1)

Why Explore Space? . Specifically, she asked how he could suggest spending billions of dollars on such a project at a time when so many children were starving on Earth. Stuhlinger soon sent the following letter of explanation to Sister Jucunda, along with a copy of "Earthrise," the iconic photograph of Earth taken in 1968 by astronaut William Anders, from the Moon (also embedded in the transcript). His thoughtful reply was later published by NASA, and titled, "Why Explore Space?" May 6, 1970Dear Sister Mary Jucunda:Your letter was one of many which are reaching me every day, but it has touched me more deeply than all the others because it came so much from the depths of a searching mind and a compassionate heart. The photograph which I enclose with this letter shows a view of our Earth as seen from Apollo 8 when it orbited the moon at Christmas, 1968.

Einstein & Faith He was slow in learning how to talk. "My parents were so worried," he later recalled, "that they consulted a doctor." Even after he had begun using words, sometime after the age of 2, he developed a quirk that prompted the family maid to dub him "der Depperte," the dopey one. Whenever he had something to say, he would try it out on himself, whispering it softly until it sounded good enough to pronounce aloud. Subscribe Now Get TIME the way you want it The print magazine in your mailbox The Tablet Edition on your iPad® Subscriber-only content on, including magazine stories and access to the TIME Archive.

A Brief History Of Nothing : 13.7: Cosmos And Culture Using my recent interview on To The Best Of Our Knowledge about the Krauss and the "Universe From Nothing" controversy as a pretext, I thought it would be a good idea to write a bit about what physics says of "nothing," and how this tricky notion evolved. (Here is something I wrote for 13.7 on this a few weeks back.) We may start with Aristotle, who decided that "Nature abhors a vacuum" and thus declared that there was no such thing as nothing, understood as absolute emptiness. Spaced was filled up with aether, the same stuff that made up all celestial objects, from the moon up. Aristotle was reacting to the atomists, who, before him, had declared that matter was made of indivisible atoms moving in the void. Fast forward to the early 17th century and Descartes also states that there is no such thing as empty space. The ping pong continued in the 19th century, when Maxwell figured out that light was made of waving electric and magnetic fields.

Basics of Space Flight: Orbital Mechanics Orbital mechanics, also called flight mechanics, is the study of the motions of artificial satellites and space vehicles moving under the influence of forces such as gravity, atmospheric drag, thrust, etc. Orbital mechanics is a modern offshoot of celestial mechanics which is the study of the motions of natural celestial bodies such as the moon and planets. The root of orbital mechanics can be traced back to the 17th century when mathematician Isaac Newton (1642-1727) put forward his laws of motion and formulated his law of universal gravitation. The engineering applications of orbital mechanics include ascent trajectories, reentry and landing, rendezvous computations, and lunar and interplanetary trajectories. Conic Sections A conic section, or just conic, is a curve formed by passing a plane through a right circular cone. We can define all conic sections in terms of the eccentricity. Satellite orbits can be any of the four conic sections. Orbital Elements Types Of Orbits 1. . 2R. t)/2.

Orfeo: A Dialog between Robert Hunter and Terence McKenna This is Part OnePart TwoPart ThreePart FourPart Five (current) Terence, in reading your books I was struck with how closely your DMT experiments paralleled my own. I wasn't surprised by the confirmation, as you might guess. I considered myself a serious DMT explorer between 1967-69. I stopped only because I was told to, in no uncertain terms, by the Boss of that place. Robert Hunter Greetings Bob-- I was interested in what you had to say about being an explorer of the DMT world until the management told you to stay away. I enjoy the idea of a slow moving dialog, I hope this can continue. Best, T Terence, I suppose the "facts" of DMT might as well be written in cunieform on our breastbones for all the good it does to know about it, as opposed to "dwelling in the know of it." My personal take on the "secret" of DMT: it was long, hard work making this world real. My take could be way off base but anything more Gnostic is off-putting. We need a few verbs and prepositions to explain ourselves.

Cosmic latte Cosmic Latte is a name assigned to the average color of the universe, given by a team of astronomers from Johns Hopkins University. Discovery of the color[edit] In 2001, Karl Glazebrook and Ivan Baldry determined that the color of the universe was a greenish white, but they soon corrected their analysis in a 2002 paper,[1] in which they reported that their survey of the color of all light in the universe added up to a slightly beigeish white. The survey included more than 200,000 galaxies, and measured the spectral range of the light from a large volume of the universe. The finding of the "color of the universe" was not the focus of the study, which was examining spectral analysis of different galaxies to study star formation. Glazebrook's and Baldry's work was funded by the David and Lucile Packard Foundation. Naming of the color[edit] The color was displayed in a Washington Post article. References[edit] External links[edit] The Cosmic Spectrum Official project website

Geostationary orbit Geostationary orbits (top view). To an observer on the rotating Earth, both satellites appear stationary in the sky at their respective locations. Geostationary orbits (side view) A 5 × 6 degree view of a part of the geostationary belt, showing several geostationary satellites. A geostationary orbit, geostationary Earth orbit or geosynchronous equatorial orbit[1] (GEO), is a circular orbit 35,786 kilometres (22,236 mi) above the Earth's equator and following the direction of the Earth's rotation.[2] An object in such an orbit has an orbital period equal to the Earth's rotational period (one sidereal day), and thus appears motionless, at a fixed position in the sky, to ground observers. The notion of a geosynchronous satellite for communication purposes was first published in 1928 (but not widely so) by Herman Potočnik.[3] The first appearance of a geostationary orbit in popular literature was in the first Venus Equilateral story by George O. Practical uses[edit] Orbital stability[edit]

Telescope Targets Black Holes' Binges And Burps The NuSTAR telescope, seen in this artist's illustration, will soon be sending back data that researchers will use to study black holes. NASA/JPL-Caltech hide caption itoggle caption NASA/JPL-Caltech NASA's newest space telescope will start searching the universe for black holes on Wednesday. Scientists hope the NuSTAR X-ray telescope, which launched about six weeks ago and is now flying about 350 miles above the Earth, will help shed some light on the mysteries of these space oddities. Mission control for the telescope is a small room on the University of California, Berkeley, campus, where about a dozen people with headsets rarely look up from their screens. Fiona Harrison, a professor of physics and astronomy at the California Institute of Technology, is the principal scientist for the mission. The beginning of a space telescope's life is particularly stressful. Now, the $170 million telescope is just about ready to begin its hunt for black holes.

Magnetosphere in Sound One of NASA's newest missions has recorded the radio waves coming from our magnetosphere. Musicians: Sample away. A graphic of Earth's twin rings of plasma known as the Van Allen Radiation Belts in our planet's magnetosphere (NASA) Surrounding our planet are rings of plasma, part of Earth's magnetosphere, which are pulsing with radio waves. The noises, often picked up here on Earth by ham-radio operators, are called Earth's "chorus" as they are reminiscent of a chorus of birds chirping in the early morning.

Lagrange Points of the Earth-Moon System A mechanical system with three objects, say the Earth, Moon and Sun, constitutes a three-body problem. The three-body problem is famous in both mathematics and physics circles, and mathematicians in the 1950s finally managed an elegant proof that it is impossible to solve. However, approximate solutions can be very useful, particularly when the masses of the three objects differ greatly. For the Sun-Earth-Moon system, the Sun's mass is so dominant that it can be treated as a fixed object and the Earth-Moon system treated as a two-body system from the point of view of a reference frame orbiting the Sun with that system. 18th century mathematicians Leonhard Euler and Joseph-Louis Lagrange discovered that there were five special points in this rotating reference frame where a gravitational equilibrium could be maintained. The L5 point was the focus of a major proposal for a colony in "The High Frontier" by Gerard K.

Close Shave: Asteroid To Buzz Earth Next Week hide captionThis computer image from a NASA video shows the small asteroid 2012 DA14 on its path as it passes by Earth on Feb. 15. An asteroid the size of an office building will zoom close by Earth next week, but it's not on a collision course, NASA says. Still, some people think this near-miss should serve as a wake-up call. "It's a warning shot across our bow that we are flying around the solar system in a shooting gallery," says Ed Lu, a former astronaut and head of the B612 Foundation, a nonprofit dedicated to protecting humanity from asteroids. The asteroid known as 2012 DA14 was first spotted last year by astronomers in Spain. It will whiz past Earth on Feb. 15, going about 5 miles per second. NASA officials say this event is one for the record books — the first time scientists have been able to predict something so big coming so close. It will come closer than satellites in a geosynchronous orbit around 22,000 miles up, but is extremely unlikely to hit any of those as it goes by.

Elon Musk's Mission to Mars | Wired Science Maverick entrepreneur Elon Musk Photo: Art Streiber When a man tells you about the time he planned to put a vegetable garden on Mars, you worry about his mental state. But if that same man has since launched multiple rockets that are actually capable of reaching Mars—sending them into orbit, Bond-style, from a tiny island in the Pacific—you need to find another diagnosis. That’s the thing about extreme entrepreneurialism: There’s a fine line between madness and genius, and you need a little bit of both to really change the world. All entrepreneurs have an aptitude for risk, but more important than that is their capacity for self-delusion. I have never met an entrepreneur who fits this model more than Elon Musk. And he is leading the private space race with SpaceX, which is poised to replace the space shuttle and usher us into an interplanetary age. It’s no wonder the character of Tony Stark in Iron Man, played by Robert Downey Jr., was modeled on Musk: This is superhero-grade stuff.