China has reached a new record for nuclear fusion at 120 million degrees Celsius.
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Researchers find a key clue to the evolution of bony fish and tetrapods.
The odds are slim, but the consequences would be devastating. Here’s what would happen, plus how to avoid it.
If stars don’t go supernova at first, they can get a second chance after becoming a white dwarf. But can their companions survive?
Back in 1990, we hadn’t discovered a single planet outside of our Solar System. Here are 10 facts that would’ve surprised every astronomer.
In our Solar System, even the two brightest planets frequently align in our skies. But only rarely is it spectacularly visible from Earth.
Earth is actively broadcasting and actively searching for intelligent civilizations. But could our technology even detect ourselves?
Dark energy is one of the biggest mysteries in all the Universe. Is there some way to avoid “having to live with it?”
Is 2022 the year the economy recovers?
The massive craft could carry 100 humans to Mars and revolutionize space exploration.
Every star we can see, including our sun, was born in one of these violent clouds.
If it weren’t for the intricate rules of quantum physics, we wouldn’t have formed neutral atoms “only” ~380,000 years after the Big Bang.
The Universe begins with negligible amounts of angular momentum, which is always conserved. So why do planets, stars, and galaxies all spin?
We forget how unnatural a lot of formal education is. “Learning how to learn” requires bridging the gap between the abstract and the natural.
No matter what physical system we consider, nature always obeys the same fundamental laws. Must it be this way, and if so, why?
The Universe is 13.8 billion years old, going back to the hot Big Bang. But was that truly the beginning, and is that truly its age?
The last naked-eye Milky Way supernova happened way back in 1604. The next one could be the key to solving the dark matter mystery.
Researchers discovered a galactic wind from a supermassive black hole that sheds light on the evolution of galaxies.
We think of physical reality as what objectively exists, independent of any observer. But relativity and quantum physics say otherwise.
Astronomers find a third type of supernova and explain a mystery from 1054 AD.
It is time to give the Russian cosmologist the credit he deserves.
Astrophysicists once believed in a static Universe, containing only the Milky Way galaxy. Science definitively proved otherwise.
60% of all potentially dangerous asteroids remain undetected.
In 1974, Stephen Hawking showed that even black holes don’t live forever, but emit radiation and eventually evaporate. Here’s how.
An analysis of the gravitational wave data from black hole mergers show that the event horizon area, and entropy, always increases.
A single lifetime is more than enough to take you to the limits of the Universe. Right now, there are only three things limiting how far our spacecrafts can take […]
Congratulations to Penrose, Ghez and Genzel, and to black hole enthusiasts everywhere. On October 6, 2020, the Nobel Prize in Physics was awarded towards research in black holes. 50% of […]
The anthropic principle has fascinating scientific uses, where the simple fact of our existence holds deep physical lessons. Don’t abuse it!
NASA is creating a planet habitability index, and Earth may not be at the top. With our current data, ranking habitability is guesswork.
Out of all the galaxies we know, only a few little ones are missing dark matter. At last, we finally understand why.