From succubi to aliens, stories of abductions or other unsettling encounters have been with us for millennia. What explains them?
Previously, only the brightest and most active galaxies could pierce the obscuring wall of cosmic dust. At last, normal galaxies break through.
We used to think the Big Bang meant the universe began from a singularity. Nearly 100 years later, we're not so sure.
After more than two decades of precision measurements, we've now reached the "gold standard" for how the pieces don't fit.
Black hole mergers are some of the most energetic events in the Universe. Could the gravitational waves they produce ever harm us? The Universe is not a static, stable place. Out […]
Or is ‘new space’ created in between the gaps of the ‘old’ space? It’s been almost 100 years since humanity first reached a revolutionary conclusion about our Universe: space itself doesn’t […]
A recent survey also found that political messaging from the pulpit increased the likelihood of believing presidents to be ordained by God.
Digital currencies are set to upend paper currencies, but it likely won't be the decentralized utopia some hope it will be.
We know it couldn't have began from a singularity. So how small could it have been at the absolute minimum?
The Big Bang is our accepted origin of the Universe. But is there another possibility? Since the mid-1960s and the discovery of the Cosmic Microwave Background, the Big Bang has […]
Why are the rest masses of fundamental particles related like this? When it comes to the nature of matter in the Universe, the Standard Model describes the known elementary particles perfectly […]
If it wasn’t a singularity, how small could it have been? Today, when you look out in any direction as far as the laws of physics allow us to see, the […]
The expansion rate is dropping, but distant galaxies are accelerating. Here’s how. If you take a look at any galaxy in the Universe that isn’t gravitationally bound to our own, we’ve […]
‘Reductio ad absurdum’ won’t help you in an absurd Universe. Throughout history, there have been two main ways humanity has attempted to gain knowledge about the world: top-down, where we […]
If dark matter exists in a large halo in our galaxy, made up of particles, then it's passing through us constantly. But how much?
California’s Bobcat Fire has reached Mount Wilson Observatory’s doorstep. 100 years ago, our understanding of the Universe was very different from what it is today. Einstein’s General Relativity, our theory […]
A new study at the University of Basel shows how interactive literature has become.
Once only dark energy remains, empty space still won’t be completely empty. Imagine, if you dare, the very end of the Universe. The stars — past, present, and future — have all burned out. […]
If your Universe contains any matter at all, a constant Hubble parameter is absolutely impossible. Our observable Universe is an enormous place, with some two trillion galaxies strewn across the […]
The majority of the matter in our Universe isn't made of any of the particles in the Standard Model. Could the axion save the day?
It might seem puzzling, in a Universe bound by the speed of light, that this could be true. Here’s the science behind it. If you look out into the distant Universe, […]
Maps show the oldest company in (nearly) every country – and a few interesting corporate trends.
It’s 92 billion light-years wide after just 13.8 billion years. And that’s just fine. If there’s one rule that people know about how fast things can move, it’s that there’s a […]
100+ years ago, General Relativity came along, and Einstein gave the Universe a cosmological constant. Here’s why that was a mistake. Back in the 17th century, Isaac Newton put forth the […]