Dark matter: unless you're a theoretical physicist, you probably will have a hard time explaining just what this mysterious thing in our Universe really is. Even experts have long viewed the material as one giant question mark looming over blackboards and telescopic lenses. Now, a new discovery has made things even more complicated. Dark matter, as it turns out, barely even interacts with itself, explaining why it is so undetectable.
Enthusiasts who have been following NASA's mission plans closely might be a little disappointed with the space agency's latest decision concerning the historic Asteroid Redirect Mission (ARM). The mission, the very name of which held the promise of physically capturing an asteroid, will now simply be plucking a boulder from the surface of a hurtling space rock as it flies by in 2022.
We certainly know how long our own day is, and Mars is not much longer (24 hours and 40 min). The closest planet to the Sun, Mercury's own incredibly long day lasts more than 1,407 hours. What's interesting, however, is that astronomers know all this with near certainty. That's not the case for Saturn, on the other hand, whose day length has remained something of an enigma.
Supermassive black holes are the source of many galactic outbursts in the Universe, according to new research that helped solve a longstanding mystery.
Scientists have discovered signs of ancient water activity on Mars in a now- dried up lake system, adding to growing evidence that the Red Planet was once habitable for life, according to a new study.
The Energizer bunny has some serious competition when it comes to things that just won't quit. I'm talking about NASA's Opportunity Mars rover, which successfully finished traveling the equivalent of an Olympic marathon, covering a stunning 26.219 miles (about 42 km) as of Tuesday.
The final preparations are underway to put a Russian and American astronaut into space for a full year - an important step as each country's respective space agencies prepare to move humanity's explorers into deeper space.
Like Miley Cyrus herself, millions of years ago a wandering Jupiter came in like a wrecking ball, destroying a first generation of inner planets and helping to create the unusual solar system we find ourselves in today.
Can stars produce sound? Well, a chance discovery has revealed that they just may be able to, though us mere humans can't hear it.
Scientists have recently detected remnants of an ancient "dusty" supernova in the center of our own Milky Way galaxy, and it's helping to solve an age-old puzzle, according to a new study.
More than a million young stars are forming in a mysterious hot, dusty cloud of molecular gases in a tiny galaxy not too far away from our own, according to new research.
Two years ago, an object the size of a small boulder slammed into the surface of Earth's Moon with immense force, creating a flash of light nearly 10 times brighter than anything lunar impact ever recorded. Like many impacts before it, the collision changed the face of our moon forever, adding several new craters and altering old ones. Now NASA experts are working to distinguish the new from the old - identifying the Moon's freshest craters to help them better understand these kinds of impacts.
It seems that despite the fact that humanity has had orbiters in the sky and landers on the Martian surface since the 1970s, the Red Planet is still full of surprises. A new Mars orbiter sent by NASA has now noticed not one, but two unexpected phenomena in the planet's atmosphere: an unexplained high-altitude dust cloud and an unusual aurora.
Our own Milky Way galaxy harbors thousands of potentially habitable planets, telling scientists that in the search for life not on Earth, they should be looking a little closer to home.
Just yesterday, while everyone was pinching, pounding down beer, or having an existential meltdown over the truth about shamrocks, people in Northern Europe, Scandinavia, and Iceland got the Northern Lights show of a lifetime. That's because a stunningly powerful solar storm supercharged the auroras in these regions, lighting up the evening sky with some festive colors.