Tag Archives: Dark Matter

How does Planck-scale physics work?

Planck-scale physics is more than a hundred years old. Physics is starting to take it seriously. This is great because we can hope for exciting new science and technology to drive a new economy. Planck scale is the incredibly tiny scale at which physics actually happens. It is the scale at which space no longer […]

The Dark Matter Mystery Is Solved! LIGO’s observations show mid-sized primordial black holes are not improbable.

For years Dark Matter has confronted physics with a massive mystery. A recent article describes it as ‘the invisible substance that astronomers believe accounts for about 80% of the stuff in the universe.’ But what is it? This question has physicists searching for obscure new particles with the world’s largest machine, the Large Hadron Collider. […]

Making Space

Precise measurements say the universe is expanding. The measurements don’t show new matter. They show new space. This leaves those who think of space as empty with a conceptual puzzle. As cosmologist Marcus Chown once said, ‘How can nothing expand?’ Muralidharan Thiyagarajan, who is a systems engineer with Infosys in Chennai, has another way to […]

Why Are We Discovering Double Black Holes?

Black holes are in the news again. Only a few weeks ago news of two surprisingly big black holes colliding in a distant galaxy arrived at Earth. Now astronomers have found a closer and far bigger pair of black holes. First the gravity waves. A fantastically sensitive instrument called LIGO measured them as they rolled […]

WIMPed Out?

The mystery of the missing WIMPs is heading for a crisis. It’s looking like the reason we can’t find them is they don’t exist. Most people never heard of them. What is a WIMP? It is Dark Matter by another name. It stands for Weakly Interacting Massive Particle. They must be weakly interacting because no-one’s […]

LIGO’s Tiny Twitch is a Big Deal

It may be the top science story of this century so far (though I hope an even bigger one is coming): Physicists detected gravitational waves; you can hear them here. This discovery has profound implications for the future of cosmology. It will affect our lives in ways we cannot yet conceive. It was a long […]