Tag Archives: Planck satellite

At last an answer: What happened at the Big Bang

What exactly happened when the universe was born? What happened at the Big Bang? is the title of last summer’s popular science exhibition sponsored by six leading British universities and the Royal Society in London. Amid much fascinating information, the exhibition’s answer was: We don’t know. Yet, as Science Seen’s readers will recall, that answer […]

The Flow of Time

Does time flow? It is a fundamental question. It has confounded physics for hundreds of years. It still does. We sense the flow of time.  Today many physicists say this is an illusion. I say they don’t understand. Physics at the very largest and the very smallest scales leads to a simple way to make […]

A Cosmic Puzzle Provides Insights into New Physics

A new cosmic contradiction is begging for an explanation. We’ve known for years that space is expanding. Now new measurements of the rate at which it is expanding seem to differ from previous ones based on the standard cosmological model. New physics often comes from measurements that don’t fit theory. Here is my take on […]

Space Mass

‘It is indeed an exacting requirement to have to ascribe physical reality to space in general, and especially to empty space.’ — Albert Einstein Most physicists work in a vacuum. That is, they tend to think in terms of particles in empty space. But both Albert Einstein and recent evidence say they are wrong: Far […]

Hawking’s Missing Black-Hole Radiation

There are billions of black holes in our universe. Maybe gazillions. Stephen Hawking says they give off a strange kind of radiation. So we should see them, right? Here’s a cosmological Catch-22. To set the scene, the Albert Einstein Institute says: ‘If, in our universe’s fiery youth, “mini black holes” of very little mass had […]