At the end of a lecture on astronomy, describing how the planets orbit the Sun, a little old lady at the back of the room stood up and said: "What you've told us is all rubbish. The world is really a ...

Axions are today's most popular candidate for dark matter, and numerous experiments are trying to detect them in microwave cavities where the axion should rarely convert into an electromagnetic wave.

Matter is “stuff”. It is anything that is made up of particles that take up space. Everything we can feel and see on Earth is matter, and it’s usually in one of three types: solid, liquid or gas. This ...

Modern cosmology assumes dark matter exists. But what makes us so certain that dark matter is the answer—and what if we're wrong?

Despite making up most of the matter in the universe, dark matter doesn't interact with light. So how do astronomers know it is there? When you purchase through links on our site, we may earn an ...

Yes — in short, this is true for all forms of matter and energy, including dark matter and dark energy. But there are some important details to consider. Usually, the part of the equation containing ...

Dark matter is elusive, complex, and perhaps far more massive than we thought. A recent simulation of the early universe suggests that one of the most promising targets in the hunt for dark matter — a ...

Information could become the fifth state of matter alongside gas, plasma, liquid, and solid states. A scientist has proposed an experiment involving particle annihilation that could establish that ...

Have you ever stood by the sea and been overwhelmed by its vastness, by how quickly it could roll in and swallow you? Evidence suggests that we are suspended in a cosmic sea of dark matter, a ...