Despite all the challenges, Hubble has vindicated this discovery. Practically everywhere we look in the Universe, the large-scale objects that we see — small galaxies, large galaxies, groups and clusters of galaxies, […]
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A supernova exploded near Earth about 2.5 million years ago, possibly causing an extinction event.
The meteorites suggest astronomers may have small, early planets wrong.
Inventions with revolutionary potential made by a mysterious aerospace engineer for the U.S. Navy come to light.
SpaceX’s momentous Crew Dragon launch is a sign of things to come for the space industry, and humanity’s future.
Need a distraction during these stay-at-home times? Look up tonight to see the first supermoon of spring.
Deniers will never stop misleading others. Here’s the truth. Every so often, advocates of a fringe theory — one that doesn’t fit the evidence as well as the mainstream theory — do what they can […]
There are exposed planetary cores orbiting stars, and we may have already found them. When we take a look at the planets in our Solar System, there’s a pretty clear difference […]
From galaxies with no dark matter to ones with hundreds of times more dark matter than normal, our Universe needs it more than ever. One of the most mysterious substances in […]
The origin of the 3rd element on the periodic table was one of the great cosmic mysteries. We just solved it. How did we form the elements that pervade the Universe […]
Modern science progresses with an intensity and even irrationality that Aristotle could not fathom.
Enough mass in one location will always create a black hole. But not all masses are possible. If you take enough mass and compress it into a small enough volume […]
Black holes are the darkest objects of all. But are they made of dark matter? When it comes to the Universe, few objects are more compelling, fascinating, or extreme than black […]
A “seafood mafia” is plying the waters between India and Sri Lanka to satisfy China’s appetite for an increasingly rare delicacy.
With just a few more neutron star mergers, we’ll have the best constraints of all-time. How fast is the Universe expanding? Ever since the expanding Universe was first discovered nearly […]
Almost certainly not. Here’s the science of why. The Universe, as we know it, simply doesn’t add up. On the one hand, we can look out on a cosmic scale and […]
Is the “big freeze” our inevitable fate, or can dark energy save us? When we look out at the Universe today, we see sources of light practically everywhere we look. In […]
Unlike most articles that are titled with a question, the answer isn’t automatically “no.” Announced on January 6, 2020, NASA’s TESS mission has just discovered its first Earth-sized, habitable zone […]
NASA’s New Horizons is the most distant technologically advanced observatory ever. And that makes all the difference. When you look at an object that’s very distant from you, how well […]
It’s one of only five spacecraft that will exit the Solar System, and the only one we have a chance to aim at another star. Of all the spacecraft ever launched, […]
One look at the uncertainties and the assumptions changes the story tremendously. Is there intelligent life out there in the Milky Way beyond our own Solar System? If so, how […]
Everyone is entitled to their own opinions, but no one is entitled to their own facts. Everyone is entitled to their own opinions, but no one is entitled to their own […]
America’s Space Force has acquired a horse for an important mission.
Two stellar mass black holes, if they merge in the vicinity of a supermassive black hole, could have their gravitational wave signal affected by the strongly curved space around them. […]
If dark matter is fundamentally different from the normal matter we know, there should be a way to test it. Here are the results. Dark matter — despite the enormous indirect evidence for […]
Have any of the stars we can see burned themselves out completely? When we look out across the Universe, we’re also peering back in time. In the early 21st-century, we’ve […]
Targeting a signaling pathway in mice helped them retain muscle and bone mass aboard the International Space Station, according to a new study.
On larger and larger scales, many of the same structures we see at small ones repeat themselves. Do we live in a fractal Universe?
A new study sheds light on the final supernovae of the Universe.
The Big Bang started it all. And then we realized there was more. Of all the questions humanity has ever pondered, perhaps the most profound is, “where did all of this […]