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Sean Kirkpatrick

Very interesting photo- space - 3 views

news.sciencemag.org/...shot-nearby-solar-system-.html

science research knowledge

shared by Sean Kirkpatrick on 07 Dec 12 - No Cached
  • Sean Kirkpatrick on 07 Dec 12
     
    Thought this was a very interesting photograph
kortanekev

Reasons To Believe : Anthropic Principle: A Precise Plan for Humanity - 0 views

www.reasons.org/...le-a-precise-plan-for-humanity

science research psychology knowledge

shared by kortanekev on 08 Dec 16 - No Cached
  • The anthropic principle says that the universe appears "designed" for the sake of human life
  • To state the principle more dramatically, a preponderance of physical evidence points to humanity as the central theme of the cosmos.
  • Evidence of specific preparation for human existence shows up in the characteristics of the solar system, as well
  • kortanekev on 08 Dec 16
     
    The Anthropic Principle, arguably the most human sentient there is. This principle is the concept that due to our timeline of creation, the universe has been created specifically for us. But what about  monkeys? They are as much a result of the laws of nature as we are, perhaps the universe was created for them! This idea of human centrality appears in religion as well as early science - through a geocentric model. But as we move further into the universe, it's clear to see there lays much more than us and such sentiments ... 
maxwellokolo

Astronomers discover 7 Earth-like planets orbiting nearby star - 0 views

www.cnn.com/...index.html

shared by maxwellokolo on 23 Feb 17 - No Cached
  • maxwellokolo on 23 Feb 17
     
    This discovery outside of our solar system is rare because the planets have the winning combination of being similar in size to Earth and temperate, meaning they could have water on their surfaces and potentially support life. Developing story - more to come
maxwellokolo

Incredible alien worlds: Weird and wonderful exoplanets - 1 views

www.cnn.com/...index.html

shared by maxwellokolo on 23 Feb 17 - No Cached
  • maxwellokolo on 23 Feb 17
     
    From a scorched world with surfaces hotter than lava, to one of the best chances for life outside of our solar system, scientists have discovered a host of incredible exoplanets orbiting other stars in our night's sky.
haubertbr

NASA discovers 7 Earth-like planets - 0 views

www.theshorthorn.com/...dc-11e6-b384-8ba67fad3cdf.html

space

shared by haubertbr on 03 Mar 17 - No Cached
  • haubertbr on 03 Mar 17
     
    The search for life beyond Earth is becoming more of a reality because of NASA's latest findings. NASA officials hosted a press conference Feb. 21 about its discovery of seven planets in one solar system, called Trappist-1, that have a strong possibility of hosting life.
sandrine_h

How Do Astronomers Actually Find Exoplanets? | Science | Smithsonian - 1 views

www.smithsonianmag.com/...ally-find-exoplanets-180950105

research science knowledge

shared by sandrine_h on 05 Mar 17 - No Cached
  • generation ago, the idea of a planet orbiting a distant star was still in the realm of science fiction. But since the discovery of the first exoplanet in 1988, we've found hundreds of them, with the discoveries coming at a faster rate over time.
  • But the vast majority of all these distant planets have one thing in common—with a few exceptions, they're too far away for us to see, even with our most powerful telescopes. If that's the case, how do astronomers know they're there?
caelengrubb

How Isaac Newton Changed the World | Live Science - 0 views

www.livescience.com/saac-newton-changed-world.html

shared by caelengrubb on 17 Jan 21 - No Cached
  • To the probable dismay of some befuddled calculus and physics students the world over, Isaac Newton didn't just live, he grew up and lived long enough to become the single-most influential scientist of the 17th-century.
  • Newton's wide range of discoveries, from his theories of optics to his groundbreaking work on the laws of motion and gravity, formed the basis for modern physics.
  • The true genius of his work, experts think, is how he ultimately took those theories and applied them to the universe at large, explaining the motions of the Sun and planets in a way that had never been done before.
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  • Upon getting bumped on the head by a falling apple, Newton airily dreams up the laws of gravity and the rest, as they say, is history
  • When the black plague closed Cambridge University, where he was a student, for two years starting in 1665, he spent the long months locked up at home studying complex mathematics, physics and optics.
  • It was during this fruitful time that Newton, with the help of a crystal prism, became the first to discover that white light is made up a spectrum of colors
  • He also developed the concept of infinite-series calculus, the kind of scary math studied today by engineering and statistics scholars.
  • By 1666, Newton had even laid the blueprints for his three laws of motion, still recited by physics students everywhere:An object will remain in a state of inertia unless acted upon by force.The relationship between acceleration and applied force is F=ma.For every action there is an equal and opposite reaction.
  • Across the pages of the Principia, Newton breaks down the workings of the solar system into "'simple"' equations, explaining away the nature of planetary orbits and the pull between heavenly bodies.
caelengrubb

8 Things You May Not Know About Galileo - HISTORY - 0 views

www.history.com/...you-may-not-know-about-galileo

shared by caelengrubb on 17 Jan 21 - No Cached
  • When he was 16, Galileo enrolled at the University of Pisa to study medicine, at his father’s urging. Instead, though, he became interested in mathematics and shifted his focus to that subjec
  • Galileo left the school in 1585 without earning a degree.
  • Galileo didn’t invent the telescope—Dutch eyeglass maker Hans Lippershey is generally credited with its creation—but he was the first person to use the optical instrument to systematically study the heavens.
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  • In 1609, Galileo learned about the device and developed one of his own, significantly improving its design. That fall, he pointed it at the moon and discovered it had craters and mountains, debunking the common belief that the moon’s surface was smooth.
  • Galileo soon went on to make other findings with his telescope, including that there were four moons orbiting Jupiter and that Venus went through a complete set of phases (indicating the planet traveled around the sun).
  • Galileo had three children with a woman named Marina Gamba, who he never married. In 1613, he placed his two daughters, Virginia, born in 1600, and Livia, born in 1601, in a convent near Florence, where they remained for the rest of their lives, despite their father’s eventual troubles with the Catholic Church
  • Copernicus’ heliocentric theory about the way the universe works challenged the widely accepted belief, espoused by the astronomer Ptolemy in the second century, that put the Earth at the center of the solar system.
  • Galileo received permission from the Church to continue investigating Copernicus’ ideas, as long as he didn’t hold or defend them.
  • As a result, the following year Galileo was ordered to stand trial before the Inquisition in Rome
  • After being found guilty of heresy, Galileo was forced to publicly repent and sentenced to life in prison.
  • Although Galileo was given life behind bars, his sentence soon was changed to house arrest. He lived out his final years at Villa Il Gioiello (“the Jewel”), his home in the town of Arcetri, near Florence
  • In 1979, Pope John Paul II initiated an investigation into the Catholic Church’s condemnation of Galileo.
  • Thirteen years later, and 359 years after Galileo was tried by the Inquisition, the pope officially closed the investigation and issued a formal apology in the case, acknowledging that errors were made by the judges during the trial.
anniina03

It's Cold Outside, but Earth Is at Its Closest Approach to the Sun - The New York Times - 0 views

www.nytimes.com/...perihelion-earth-sun.html

science Technology research

shared by anniina03 on 08 Jan 20 - No Cached
  • This story was updated to reflect 2020’s perihelion.In the wee hours of Sunday (2:47 a.m. Eastern time, to be exact), Earth will make its closest approach to the sun and reach a point in its orbit known as perihelion.
  • Chilly as winter may feel in the Northern Hemisphere, we’re more than three million miles closer to our fiery star than we were in the dead of summer.
  • The change in distance occurs because our planet’s orbit is stretched into an ellipse
  • ...7 more annotations...
  • Although three million miles sounds vast, it’s not much on the scale of our solar system. In fact, despite the planet’s elliptical path through the heavens, most astronomers say that Earth’s orbit is basically circular. On a scale of 0 to 100 percent, where 0 is a perfect circle and nearly 100 is a very thin oval, Earth only scores a 1.7.
  • It’s a defining trait that keeps our planet at roughly the same distance from our sun, and keeps the climate relatively stable. This has led many astronomers to wonder whether a circular orbit just might be a crucial ingredient in the cocktail of life — and a key factor to consider as they search for signs of alien life around the thousands of exoplanets known to be circling other stars within the galaxy.
  • Consider the exoplanet known as HD 20782 b, which boasts the highest eccentricity yet discovered — a whopping 97 percent. Although the alien world is likely more akin to Jupiter than Earth in mass, it’s easy to imagine what might happen to a wildly eccentric Earthlike planet.At its closest approach to the star, the planet would face an explosion of heat that would evaporate the planet’s oceans and strip the planet’s atmosphere, sending crucial molecules such as oxygen streaming into space.
  • Such a dire portrait could suggest that life prefers a circle. But do most exoplanets orbit their host stars in bands similar to the Earth, or are their orbits more like that of HD 20782 b?
  • This suggests that most of these rocky worlds might be able to host a stable climate and, therefore, life.But Dr. Kane and other researchers warned against dismissing the possibility of life forming on worlds with highly-eccentric orbits.
  • Last year, Dr. Kane and his colleagues estimated that a planet with an eccentricity as high as 30 or even 40 percent could remain habitable
  • the galaxy and its many orbiting planets could surprise us. “I think it’s often assumed that life is wimpy and needs ‘just so’ conditions to exist,” Dr. Raymond said. “But life on Earth did indeed survive some tough times.”
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