ADVERTISEMENT
  About the SA Blog Network

Posts Tagged "dark energy"

Basic Space

How a new map of the early universe is like a hedgehog

On the back of a hedgehog...

A new method for investigating dark energy has allowed astronomers to peer further back into the past than ever before, revealing a universe that was very different to the one we live in today. Today’s universe is expanding. Not just that, its expansion is accelerating. Galaxies are not only getting further away from us all [...]

Keep reading »
Basic Space

How most of the universe was lost

When Brian Schmidt got his PhD in astrophysics in 1993, he was one of less than a handful of people that year that graduated with a thesis on supernovae. Five years later, still working on exploding stars, he would be part of one of two teams that independently discovered that the universe was not only [...]

Keep reading »
Basic Space

Stars That Go Out With a Bang

Supernova 2011fe in the Pinwheel Galaxy. Credit: {link url="http://thunderf00tdotorg.wordpress.com/2011/08/26/supernova-in-m101-aug-25th-full-processing/"}Thunderf00t{/link}

When a star becomes a white dwarf — an old, extremely dense star that would have once been similar to our own Sun — the eventful part of its life is over. It releases what heat and light it has left over billions of years, slowly cooling until it no longer shines. Usually. Some white [...]

Keep reading »
Basic Space

Double checking our cosmic tape measure

In the late 90s there was a race going on between two astronomy collaborations. Both were on the verge of making a discovery that would change the field of cosmology forever, though they may not have realised it at the time. The High-z Supernova Search Team and the Supernova Cosmology Project were both studying a [...]

Keep reading »
Critical Opalescence

Is Dark Matter a Glimpse of a Deeper Level of Reality?

Two years ago several of my Sci Am colleagues and I had an intense email exchange over a period of weeks, trying to figure out what to make of a new paper by string theorist Erik Verlinde. I don’t think I’ve ever been so flummoxed by physicists’ reactions to a paper. Mathematically it could hardly [...]

Keep reading »
Life, Unbounded

This Is What We Don’t Know About The Universe

dont panic.001

In recent days I’ve had some interesting conversations. There’s a giddiness going around, related to an outpouring of science love – the kind you get from President Obama introducing TV science shows, the kind that has wonderful visuals, but is, well, a wee bit simplistic (a sin that none of us could ever, ever be [...]

Keep reading »
Observations

5 Unanswered Questions That Will Keep Physicists Awake at Night

Orion Nebula photo

Physics is all about probing the most fundamental mysteries in nature, so it’s no surprise that physicists have some very basic questions about the universe on their minds. Recently, Symmetry Magazine (published by two U.S.-government funded physics labs) asked a group of particle physicists to name the open questions in physics they most want answers [...]

Keep reading »
Observations

The Real Explosions in the Sky: Supernovae Translated into Music [Video]

Tycho

What does a supernova sound like? Hopefully we will never find out directly—getting within earshot of an exploding star is probably a bad idea. But a pair of researchers has nonetheless devised a way to represent supernovae in an auditory way, and the result is a rather interesting piece of abstract music. University of Victoria [...]

Keep reading »
Plugged In

Dark Energy, Dark Universe

Screen-Shot-2013-12-11-at-7.32.53-AM

Last week, I was delighted to visit one of my favorite places in NYC, the American Museum of Natural History. Over a decade ago, I served as a Fellow with the Center for Biodiversity and Conservation, and it stands out as one of the best ‘jobs’ I’ve had. You cannot run out of things to [...]

Keep reading »
The Countdown

5 Unsolved Space Mysteries – The Countdown, Episode 26

  More to Explore: Life on Mars Ultra-High-Energy Cosmic Rays Type 1a Supernovae Dark Matter The Fate of the Universe

Keep reading »

More from Scientific American

Scientific American MIND iPad

Give a Gift & Get a Gift - Free!

Give a 1 year subscription as low as $14.99

Subscribe Now >>

X

Email this Article

X