Cosmologists are heading back to their chalkboards as the experiments designed to figure out what this unknown 84 percent of our universe actually is come up empty.
Both systems are dangerous in the wrong hands.
Galaxies evolve in mysterious way. But a new study offers a fresh approach to understand them.
We still can't see the dark matter thought to make up about a quarter of the universe, but at least now we have a map of its structure.
So where did all the dark matter come from?
Atoms manipulated to be 4000 times larger than usual may be the tool dark-matter hunters have been waiting for.
A new highly sensitive detector is being built one kilometre underground in a gold mine to detect the elusive dark matter.
A podcast on darkness: from why it makes us scared, to what kind of nightlife can thrive in the modern city and an update on the hunt for dark matter.
The universe is expanding faster than expected, but we don't know what's driving it. Here are a few of the possible explanations, from dark energy to a modification of general relativity.
Something mysterious is pulling our Milky Way through space at a much faster rate than expected. So what could it be?
Astronomers think they may have found evidence within our galaxy of some of the missing matter thought to make up our universe.
Confirmation bias, the psychological effect that makes people unconsciously interpret information to confirm their beliefs, is a big threat to cosmology.
Our panel of experts speculate on which of science's biggest questions could be answered in the coming months.
Humans have now been living on the International Space Station for 15 years. Here's what we've learned.
While we know that dark matter exists, we have no idea what it is. Luckily, there is no shortage of suggestions.
A cosmological event could have unleased the huge comet or asteroid that led to the demise of the dinosaurs.
The tiniest of particles could have huge potential to solve the greatest mysteries of the universe - including why there is more matter than antimatter.
A new detector built deep underground in a gold mine will hopefully unravel the mystery of dark matter.
A unique map of the galaxies in the sky could shed light on the mysteries of the universe – including dark energy and dark matter.
Running the world's largest particle accelerator requires a lot of energy, but it could reveal the secrets of the universe.