Greg Smith

35 Flips | 5 Magazines | 7 Likes | 1 Follower | @GregSmithpe0h | Keep up with Greg Smith on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Greg Smith”

Every sunset ends with a green flash. Why is it so hard to see?

Don't blink.<p>The finale of every sunset is green. Try to catch it, if you can. The story of the so-called green flash begins by answering this question: Why is the sky blue?<p>Sunlight contains every visible color, each with its own wavelength. Light travels as ripples, with crests and valleys; …

Pop Culture Is Having a Metaphysical Moment

The OA, Westworld, Stranger Things, and other recent works toy with the idea of multiple realities—and bring the thrill of new religion.<p>Have you ever questioned the nature of your reality? That’s the prompt that opened HBO’s <i>Westworld</i>, but it’s also the implied question behind shows like <i>The OA,</i></i> …

TV

Double eclipse colour caught on camera from NASA's satellite as Earth and moon block sun

A NASA satellite has captured images of the sun that photographers and stargazers could only dream about.<p>NASA's Solar Dynamics Observatory (SDO) …

Astronomy

3tags.org

3tags.org

3tags.org

We may be about to solve one of the biggest mysteries in the universe

The discovery of gravitational waves in February is leading to remarkable new insights in physics. One of the most promising is identifying what dark matter is made of, the elusive missing majority of the universe that we know is out there but can't detect directly. NASA Cosmologist Alexander …

Asteroid Defense: Scanning the Sky for Threats From Space

Earth is hit every day by small bits of space dust. Slightly larger chunks burn up colorfully in the atmosphere, causing the shooting stars you see …

Space

Our stargazing readers share their best photographs from the past year, from spectacular nebulae to close-ups of the moon

Astronomy

The coolest NASA missions happening right now — and the most exciting ones yet to launch

We hairless apes, gifted with powerful brains and wanderlust through chance (or fate, depending on who you ask), had figured out how to safely launch three humans into the heavens atop a shining tower of explosives.<p>The first two planted a flag, gathered some samples, gazed at the view, took a phone …

Debate accelerates on universe’s expansion speed

A puzzling mismatch is plaguing two methods for measuring how fast the universe is expanding. When the discrepancy arose a few years ago, scientists …

Discovering the 'final frontier' of our universe

<b>(CNN) —</b> Over the last week, new images have granted us exquisite views of the final frontier that is our old, vast and mysterious universe.<p>While we may be exploring strange new worlds, like exoplanets beyond our solar system, and seeking out the potential for life on them, these aren't the voyages …

Five Amazing Facts About NASA's Mission to Jupiter

After five years and 445 million miles, NASA’s Juno mission arrives in orbit around Jupiter on Monday to begin an unprecedented scientific study of …

Astronomy

Scientists made an unprecedented map of the night sky — and the results are alarming

Astronomers loathe light pollution, also called skyglow: a dim yet pervasive orange light that obscures a crisp view of the night sky.<p>But as a new study called "The new world atlas of artificial night sky brightness," published in the journal Science Advances shows, there's a shocking amount of …

3tags.org

Scientists Have Published The First Definitive Study of Creepiness

How do you score?<p>There are some things in life that are inherently creepy, like swings that move by themselves in deserted playgrounds, and clowns …

Diply

Diply is a leading social entertainment publisher that creates captivating content for millennials. We are a ComScore Top 10 Lifestyle property with …

A New Ninth Planet May Have Been Detected, Scientists Say

Sad that Pluto isn't a planet anymore? Don't worry, Caltech researchers may have discovered a new planet lurking in the outer reaches of our solar system.<p>They're calling it "Planet Nine" for now. The planet, if it exists, has a mass 10 times that of Earth and takes between 10,000 and 20,000 years …

China's moon rover proves the moon has different rocks (update)

China's Jade Rabbit (Yutu) successfully came back from the dead after a serious malfunction in 2014. (*see update below) Scientists have finished analyzing the data China's moon rover Yutu beamed back sometime ago. As it turns out, the rocks the Jade Rabbit collected can reveal more about the …

Apollo Missions

17 of the hottest European apps for Android

Europe may be lagging behind the American tech scene, but there's still a lot to be impressed by.<p>Sure, the US has Facebook, and Snapchat, and Twitter. But Europe has contributed some serious heavyweights to the modern app economy: Just take Sweden's Spotify. Or the British Citymapper. Or TomTom, …

Apps

16 psychological tricks that will help you ace a job interview

That means they're susceptible to the same psychological preferences and cognitive biases that affect the rest of us.<p>To help you get into your interviewer's head and learn what they want to see in a candidate, we rounded up a list of science-backed strategies to make yourself seem more likable, …

Top 5 discoveries from the Hubble Space Telescope

How old is the universe?<p>One of the key questions Hubble was built to answer was simple to state: How old is the universe? In the 1920s, Edwin Hubble, …

Universe

Weather On This Odd Space Object Is Cloudy With A Chance Of Molten Rain

The methods used to find this alien world, which has no host star, could help us to better identify life-sustaining objects in the future.<p>An umbrella won't do you much good on this strange Jupiter-like space object.<p>Scientists have determined the weather patterns on PSO J318.5-22 -- a mysterious 20 …

Solar System's most distant object hints at hidden planet

Astronomers have found the most distant object ever observed in the Solar System. The lump of rock is 15.5bn km from the Sun, three times further …

Astronomy

Scientists think they just found the most important planet outside our solar system

A small planet, just a bit bigger than Earth, has been spotted in our stellar neighborhood, just 39 light-years away.<p>Known as GJ 1132b, it is the closest rocky exoplanet to have ever been found, and astronomers say it could provide our most in-depth look yet at an alien world not so different than …

Universe

NASA shortlists 5 possible new missions

NASA has announced five investigations for further study in its latest competition for new, relatively small-scale, robotic missions into our solar …