Why not just buid a solar panel around the sun to solve all energy problemss?
Dyson sphere is a hypothetical mega-structure that completely encompasses a star and captures most or all of its power output.
Over the years many variants have been explored:
The simplest such arrangement is the Dyson ring, in which all ‘energy harvesting structures’ share the same orbit.
Add multiple Dyson ring structures and you will get a Dyson swarm.
Now what if you didn’t like a consistent orbit for your structures, you could employ a solar sail to continuously modify its orbit( called a statite ).
Such an arrangement would be known as a Dyson Bubble
Then there is the fictionally popular version - The Dyson Shell, where a uniform solid shell of matter just encapsulates the entire star.
And many many more. But you get the gist.
When scientists were monitoring the brightness from some stars, they found that it fluctuated in some odd ways like so:
Brightness v/s time for KIC 8462852
It is common for such dips to occur since when a planet eclipses a star, there would a drop in the brightness observed from the star.
Brightness v/s time for a binary star system
But what was baffling was the duration and period of occurrence of these dips.
Although the main line of rationale remains as asteroid impact remnants or interstellar collisions causing these aberrations in data.
But to say that these could the signs of an alien civilization does remain to be the more entertaining interpretation.
Great Question. Thanks for asking !
** For more information. check out this TED talk
NASA astronaut Peggy Whitson achieved a new milestone at the International Space Station on Sunday, when she became the first woman to command the ISS twice.
Whitson is replacing astronaut Robert Shane Kimbrough, who will depart the space station Monday.
“Up here we don’t wear shoes, but Shane is leaving me some pretty big socks to fill,” Whitson said during a live broadcast as she assumed her new position. Read more. (4/9/2017 3:40 PM)
Hues in a Crater Slope
by NASA’s Marshall Space Flight Center Impact craters expose the subsurface materials on the steep slopes of Mars. However, these slopes often experience rockfalls and debris avalanches that keep the surface clean of dust, revealing a variety of hues, like in this enhanced-color image from NASA’s Mars Reconnaissance Orbiter, representing different rock types. The bright reddish material at the top of the crater rim is from a coating of the Martian dust. The long streamers of material are from downslope movements. Also revealed in this slope are a variety of bedrock textures, with a mix of layered and jumbled deposits. This sample is typical of the Martian highlands, with lava flows and water-lain materials depositing layers, then broken up and jumbled by many impact events. This image was acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on Feb. 28, 2011 at 15:24 local Mars time. It is a stereo pair with image ESP_021454_1550. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA’s Science Mission Directorate, Washington. Image Credit: NASA/JPL/University of Arizona Caption: Alfred McEwen NASA Media Usage Guidelines
The Titanoboa, is a 48ft long snake dating from around 60-58million years ago. It had a rib cage 2ft wide, allowing it to eat whole crocodiles, and surrounding the ribcage were muscles so powerful that it could crush a rhino. Titanoboa was so big it couldn’t even spend long amounts of time on land, because the force of gravity acting on it would cause it to suffocate under its own weight.
Today is a remarkably profound day in American history, and an even more profound day for humankind.
After years of delays for perfection, SpaceX has successfully launched its FALCON HEAVY rocket, defying the force of gravity, and make its way onto an elliptical heliocentric orbit near Mars. The payload - Elon Musk’s personal midnight cherry red Tesla Roaster, with a dummy named Starman wearing a SpaceX space suit in the driver seat, playing David Bowie’s Space Oddity on repeat, with “Don’t Panic” (Hitchhiker’s Guide To The Galaxy reference) on the screen. This car is set to orbit for the next billion years, or upon destruction. This car has potential to outlive the Earth.
Now, this launch is utterly profound for too many reasons to list (although I’ll try). First and foremost, this finally begin the tangible reality of the ultimate goal of SpaceX - to make humans an interplanetary species. This rocket has the capability to take humans, to and from Mars. And although this will not be the rocket that does it, it has shown it is possible. Today marked the first move for humans going to Mars from a paper idea, to a pragmatic reality.
Furthermore, SpaceX, as a private company has entirely reconfigured space travel by its stupid-simple innovations. To simply, basically, space travel is expensive. Really expensive. Part of this reason was because the first stage and second stage (the most expensive parts of the rocket) would crash down into the ocean after use, rendering it useless. Essentially, this is like getting a new McLaren F1, to drive from NY to Boston, just to throw it away once finished. Obviously, this is extremely economicaly inefficient. However, no agency has actively sought to fix this problem because it was viewed as incorrectable, and because space travel has been dominanted by government agencies.. and as we know, government agencies spend frivolously and often don’t care about price.
What SpaceX has done to correct this giant problem was devise away to have the first stage booster descend back to Earth, and slowly and surely drop on a pad either on land or on a tracked floating device in the ocean (to understand how preposterous this is, try to imagine a 25 story building, falling from space, landing on a autonomous pad in the ocean that’s the size of a football field). This was LONG declared as impossible by numerous scientists and physicists, but despite the odds, a private company has not only managed to do this, but do successfully over 15 straight times. This was viewed IMPOSSIBLE in early 2016. Today, we viewed two boosters simultaneously land with the Falcon Heavy launch - AND these two boosters that were used today were previously recovered ones from past Falcon 9 missions. For record of how much cheaper this has made space travel:
Nasa Space Shuttle Launch - cost around 500 million
SpaceX Falcon 9 launch - cost around 50 million
The other reason why SpaceX has managed to make space travel 450 MILLION dollars cheaper is because of how it make its products. EVERYTHING IN SPACEX (and Tesla, btw) IS MADE IN HOUSE. Everything. Everything made on American soil, by American workers, IN FUCKING HOUSE. It is of course immensely difficult to build a fucking rocket from scratch, but SpaceX has perfected it. Instead of buying a computer from this company (who has to mark up to get a profit) who gets their mother board from this company (who has to mark up to get a profit) who gets their chips from this company (who has to mark up to get a profit) - everything is made IN house. As a quick example on how expensive mark up prices become after running through a few companies - A mass amount RADIOS for Tesla through a company would normally cost around 100,000 dollars, but when Musk’s team learned how to perfect it for cheaper, they brought thay price way down to 5, 000 dollars. This in house economic principle has made space travel FAR more plausible for the public then we ever could have imagined. And as SpaceX gets better, prices will continue to plummet.
After many stagnant years, there has been little to any innovation in the improvment of space travel. Since 1969 and the Apollo mission to the moon, there has been little for the public to cheer on, with regards to NASA and American space travel. However, SpaceX has given our generation a voice. It has given our generation a profound meaning. Many of us will witness the day when humans set foot on Mars, and many will witness the moment when humans first begin to colonize the red planet. Our generation has something unbelievable to stand behind - not only as a very proud nation, but as a world united. Curiosity and knowledge connects people all over the world, and traveling the cosmos and becoming an interplanetary species will have a uniting effect far greater than any of us can imagine. We are living in a very special time. Days like today will always be remember in American history, demonstrating the amazing capability of determined humans, when curiosity strikes. Lastly, it is also a reminder that many creations today were once rendered as impossible - having a Tesla flying throughout the solar system launched by the most powerful rocket currently in the world is a giant middle finger for all the thousands who have sworn that both Tesla and SpaceX would never ever be able to make it. Both began as startups with a small team of determined workers, both became near bankrupt in 2009, and today, we witness a cherry red Tesla heading into space playing David Bowie to visit the red planet. If that’s not motivating, I don’t know what is.
We’ve just added two more science missions to our lineup! The two selected missions have the potential to open new windows on one of the earliest eras in the history of our solar system – a time less than 10 millions years after the birth of our sun.
The missions, known as Lucy and Psyche, were chosen from five finalists and will proceed to mission formulation.
Lucy, a robotic spacecraft, will visit a target-rich environment of Jupiter’s mysterious Trojan asteroids. Scheduled to launch in October 2021, the spacecraft is slated to arrive at its first destination, a main asteroid belt, in 2025.
Then, from 2027 to 2033, Lucy will explore six Jupiter Trojan asteroids. These asteroids are trapped by Jupiter’s gravity in two swarms that share the planet’s orbit, one leading and one trailing Jupiter in its 12-year circuit around the sun. The Trojans are thought to be relics of a much earlier era in the history of the solar system, and may have formed far beyond Jupiter’s current orbit.
Studying these Trojan asteroids will give us valuable clues to deciphering the history of the early solar system.
The Psyche mission will explore one of the most intriguing targets in the main asteroid belt – a giant metal asteroid, known as 16 Psyche, about three times farther away from the sun than is the Earth. The asteroid measures about 130 miles in diameter and, unlike most other asteroids that are rocky or icy bodies, it is thought to be comprised of mostly metallic iron and nickel, similar to Earth’s core.
Scientists wonder whether psyche could be an exposed core of an early planet that could have been as large as Mars, but which lost its rocky outer layers due to a number of violent collisions billions of years ago.
The mission will help scientists understand how planets and other bodies separated into their layers early in their histories. The Psyche robotic mission is targeted to launch in October of 2023, arriving at the asteroid in 2030, following an Earth gravity assist spacecraft maneuver in 2024 and a Mars flyby in 2025.
Get even more information about these two new science missions HERE.
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The tail of a 99-million-year-old dinosaur, including bones, soft tissue, and even feathers, has been found preserved in amber, according to a report published today in the journal Current Biology.
A micro-CT scan of the delicate feathers that cover the dinosaur tail. Image: Lida Xing.
While individual dinosaur-era feathers have been found in amber, and evidence for feathered dinosaurs is captured in fossil impressions, this is the first time that scientists are able to clearly associate well-preserved feathers with a dinosaur, and in turn gain a better understanding of the evolution and structure of dinosaur feathers.
We clearly need a new Jurassic Park movie featuring cute feathery dinosaurs.
A reconstruction of a small coelurosaur Credit: Chung-tat Cheung
Vera Rubin, the astrophysicist responsible for confirming the first existence of dark matter, died on Sunday night at the age of 88.
Carnegie Institution president Matthew Scott called Rubin “a national treasure as an accomplished astronomer and a wonderful role model for young scientist.”
Rubin and her colleagues observed galaxies in the 1970s, they learned the motion of stars is a result of a “material that does not emit light and extends beyond the optical galaxy” — also known as dark matter.
Swiss astrophysicist Fritz Zwicky proposed the idea of dark matter in 1933, but Rubin’s groundbreaking work subsequently led to the confirmation of the material.
This finding is what led to the discovery that 90% of the universe is made up of dark matter, a finding some colleagues felt was overlooked and deserving of a Nobel Prize. Read more
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Stardate: 2258.42...or, uh, 4... Whatever. Life is weird, at least we've got science.
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