jsk2101

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An expanding universe and distant stars: tips on how to experience cosmology from your backyard

For people like me, light years, the expanding universe and the Big Bang are part of daily language.<p>You might perceive these as distant and abstract …

Universe

When Will We Break The Record For Most Distant Galaxy Ever Discovered?

The greatest advances in science often come when we first probe new frontiers.<p>When we peered into the abyss of space more deeply than ever, we revealed thousands of distant galaxies.<p>To view them, three obstacles must be overcome: their faintness, their apparent redness, and the intervening neutral …

Galaxies

The Historical King Arthur

The legends surrounding King Arthur and his knights have charmed and intrigued people for centuries and their popularity continues in the present …

Six of the Oldest Human Remains Found in the U.S.

We recently shared some of the more amazing examples of ancient archaeology in the United States. This week, we travel even farther back in time to …

How to actually get work done on an iPad

Apple is touting its updated iPad as an education-focused device, once again pushing the idea that the iPad can replace a laptop (or Chromebook, in the case of classrooms). That's unlikely, but with the right tools, it <i>can</i> be a workable substitute in a pinch.<p>It takes more than a few classroom apps …

A close galactic pair

This image displays the galaxies NGC 4302 — seen edge-on — and NGC 4298, both located 55 million light-years away. They were observed by Hubble to …

I'm following the footsteps of my Aboriginal ancestors, the first astronomers

My mind was blown away when learning about Kamilaroi and Boorong astronomy<p>I like to talk about astronomy a lot. No, scratch that, I love to talk about astronomy. All. The. Time. Thank goodness I do just that for a living. I’ve worked at Sydney Observatory for the past two years as an astronomy …

Astronomy

Apple is fighting to regain its position in America’s classrooms

Apple’s next splashy product announcement won’t be from its new campus in Cupertino, Calif. It will take place at a magnet high school on the North Side of Chicago — a signal that Apple isn’t ready to let go of the education market it once dominated.<p>Apple has not said what products will be …

College Prep

The Puzzle Of Quantum Reality

There's a hole at the heart of quantum physics.<p>It's a deep hole. Yet it's not a hole that prevents the theory from working. Quantum physics is, by any measure, astonishingly successful. It's the theory that underpins nearly all of modern technology, from the silicon chips buried in your phone to …

Quantum Physics

We'll Never Know For Sure How Everything Began

Roughly 13.8 billion years ago, the Universe as we know it expanded from an infinitely hot and dense singularity in space and time, first in a …

How to Block Nuisance Calls and Messages on Your iPhone

Unsolicited phone calls and messages can become a regular annoyance and even a cause of stress for many smartphone users these days. Thankfully, Apple provides features in iOS 11 that allow you to block nuisance calls and messages from the same number coming through to your phone, and in this …

How to use Split Screen on iPad

The iPad has an amazing split-screen mode. It’s called Split View, and it lets you use two apps side-by-side. On certain iPads, you can even float a third app over the top. Split View lets you drag and drop text, pictures, links and almost anything else between apps, just like on a Mac or PC. It’s …

Learn to View the Night Sky with 'See It with a Small Telescope'

Many of us just got our first telescope over the holidays, and let's face it — a telescope can be intimidating. It's a machine. It needs to be …

Astronomy

What would it have been like to witness the beginning of the universe?

Something wonderful happened about 13.8 billion years ago. Everything in the universe was created in an instant as an infinitesimally small point of …

10 Weird Things You (Probably) Didn't Know About the Milky Way

OXON HILL, MARYLAND, United States, EARTH, SOLAR SYSTEM, MILKY WAY<p>Sarlaccs might live in a galaxy far, far away, but our star-studded home has plenty of its own strange wonders.<p>When we look up, every star we see is in the Milky Way, the spiral galaxy we call home. The Milky Way holds every alien …

The immensity of the Universe, and our place in it

I suspect that if you asked most people, they could identify what a lot of basic astronomical objects are. Moons, planets, asteroids, stars. Fewer, …

High Sierra ‘Content Caching’ turns your Mac into a local iCloud server

When iOS update time rolls round, you probably run through all the devices in your home, downloading those multi-gigabyte updates over and over. If you have a few iPhones, plus a couple of iPads, it all adds to a lot of data, and a lot of waiting. New in macOS 10.13 High Sierra is <i>Content Caching</i>, …

Watch the Casting of a Giant Mirror for the First Extremely Large Telescope

A look inside the Mirror Lab, where astronomers go when they need some serious glass.<p>Galileo didn't invent the telescope, but he may as well have. Prior to the Italian polymath's foray into optics, astronomers were relying on telescopes that only magnified objects three times—not great when your …

Subrahmanyan Chandrasekhar explained what happens when humongous stars die

1.4 times the mass of our sun — why “Chandrasekhar’s limit” is essential for understanding why some stars form black holes.<p>All things die, even stars. When stars run out of hydrogen — the fuel that sustains the nuclear fusion reactors at their cores — they become unstable and collapse in on …

5 ways to quickly switch apps on iPad with iOS 11

In iOS 11, there are four ways to switch apps on the iPad. Five, if you count the old-school way: hitting the home button to return to the home screen, and tapping an icon to launch a different app. Some of these methods have been around a while, and have changed drastically in iOS 11. Others are …

Walden Wasn’t Thoreau’s Masterpiece

In his 2-million-word journal, the transcendentalist discovered how to balance poetic wonder and scientific rigor as he explored the natural world.<p>In late 1849, two years after Henry David Thoreau left Walden Pond—where he had lived for two years, two months, and two days in a cabin that he had …

Three Americans win Nobel Prize in physics for gravitational wave discovery

Rainer Weiss, Barry C. Barish and Kip S. Thorne have won the 2017 Nobel Prize in physics. The three Americans are members of the LIGO-Virgo detector collaboration that discovered gravitational waves. The prize was awarded “for decisive contributions to the LIGO detector and the observation of …

Physics

Apple's two-step authentication goes away with iOS 11 and macOS High Sierra

With iOS 11 and macOS 10.13 High Sierra, Apple no longer allows the use of two-step verification, its original and hastily built, somewhat creaky …

High Sierra

2017 September 19 - Veil Nebula: Wisps of an Exploded Star

<b>Veil Nebula: Wisps of an Exploded Star</b> <b><br>Image Credit:</b> NASA, ESA, and the Hubble Heritage Team (STScI/AURA)<p><b>Explanation:</b> Wisps like this are all that …

Cosmology

Idaho hopes to bring stargazers to first US dark sky reserve

BOISE, Idaho (AP) — Tourists heading to central Idaho will be in the dark if local officials get their way.<p>The first International Dark Sky Reserve …

Forests

Two years on, the Kuiper Belt is in sight

ON SEPTEMBER 11th, nearly 6bn kilometres from Earth, beyond the orbit of Neptune, a spacecraft emerged from hibernation. The primary task of <i>New</i> …

25 features that will make you want to upgrade to iOS 11

iOS

See the most moving photo from the Cassini mission

For a moment four years ago, the spacecraft Cassini watched Earth from 900 million miles away. The probe had ducked behind Saturn. There, shielded from the sun's rays, the robot turned its delicate lenses toward home. On July 19, 2013, Earthlings in the know waved and smiled for the paparazzo in …

Astronomy

Massive black hole discovered near heart of the Milky Way

Astronomers find evidence of enormous black hole one hundred thousand times more massive than the sun in a gas cloud near the galaxy’s centre<p>An enormous black hole one hundred thousand times more massive than the sun has been found hiding in a toxic gas cloud wafting around near the heart of the …

Black Holes

How to stop your iCloud and Apple ID getting hacked

If you have a lame password, then your iCloud account will eventually get hacked. You might not think a hacker is interested in you, but you’re wrong. The good news is that there are several easy steps you can take to lock your Apple ID down and make it safe.<p>If you don’t think it’s important, …