Today is a monumental day in SpaceX's history. For the first time ever, the spaceflight company flew a mission using mostly refurbished technology.

Earth is no stranger to meteors. In fact, meteor showers are a regular occurrence, where small objects (meteoroids) enter the Earth's atmosphere and radiate in the night sky. Since most of these objects are smaller than a grain of sand, they never reach the…

HP Lovecraft may be a polarising figure nowadays, but he was right about one thing: there's madness in them thar mountains. And now researchers have determined a new medical entity, discrete from altitude sickness, that causes it. They're calling it high…

Have you ever had an argument because you disagree about the way something happened? You were both there, you saw the same thing, but you remember it differently. This happens quite a lot, because human memories are imperfect. As much as we all like to think…

The Danish island of Bornholm in the Baltic Sea has turned up a cache of treasures - over 300 carved stones, dating back to the Stone Age.

You're probably not going to see it, but in 2018, a small Solar System object is going to pay us a second visit since its discovery in 2015. It's called 2015 TB145, also known as the Halloween Asteroid - and for good reason.

SpaceX launched its Falcon 9 rocket on Friday night, creating a dazzling display in the sky above Southern California, and baffling some people who had no idea what was happening. Watch some of the reactions from the ground: Some people were unsure what was…

A strange "winking" star called RZ Piscium could be devouring the remains of busted planets, according to new research, solving a long-standing mystery around the star's age and surrounding activity. Using 11 hours of telescope readings, astronomers have…

Scientists have established a method of growing hydrogel in a manner similar to the organic growth of plant or animal tissue. Robots are among the uses.

This year's most imaginative building designs offer solutions to some of the pressing issues facing humanity: Overpopulation, pollution, nature protection.

It's well established that nuclear fusion - the reaction that powers our Sun - could be the key to unlocking clean, limitless energy here on Earth. But one of the biggest challenges of modern science is how to harness the fusion reaction so that it produces…

1. The speed of gravity is pretty much identical to the speed of light! This year, for the first time ever, scientists were able to photograph a collision between two neutron stars. By conducting simultaneous optical and gravitational wave observations, they…

The world of science is unpredictable and ever-changing, but as a team that writes about science day in, day out, we can't help but notice certain trends in research. So this year - which also happens to be ScienceAlert's 10th anniversary - we thought we'd…

Imagining the future of humanity, our planet, and everything we hold dear in our corner of the cold dark Universe is typically the domain of science fiction, and we're usually only worried about the next few hundred years at best. But what about thousands…

Black hole scientists sure have been busy. At the end of last year, researchers announced that the powerful winds emanating from supermassive black holes shape entire galaxies.

Humans may possess an inherent ability to detect sick people from subtle visual cues. This skill could act as a behavioural defence against disease by limiting the risk of contamination, according to new research.

Silicon Valley is abuzz about 'Meltdown' and 'Spectre' – new ways for hackers to attack Intel, AMD, and ARM processors that were first discovered by Google last year, and publicly disclosed Wednesday.