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Astrophysics
Even in the very early Universe, there were heavy, supermassive black holes at the centers of galaxies. How did they get so big so fast?
In July of 2022, the first science images from JWST were unveiled. Two years later, it's changed our view of the Universe.
The passage of time is something we all experience, as it takes us from one moment to the next. But could it all just be an illusion?
From inside our Solar System, zodiacal light prevents us from seeing true darkness. From billions of miles away, New Horizons finally can.
The Extremely Large Telescope (ELT) will have a light-collecting power 10 times greater than today's best telescope.
Adams was infamously scooped when Neptune was discovered in 1846. His failure wasn't the end, but a prelude to a world-changing discovery.
For its 2-year science anniversary, JWST has revealed unprecedented details in "the Penguin and the Egg." Here are the surprises inside.
As the Sun ages, it loses mass, causing Earth to spiral outward in its orbit. Will that cool the Earth down, or will other effects win out?
Just 13.8 billion years after the hot Big Bang, we can see objects up to 46.1 billion light-years away. No, this doesn't violate relativity.
We know of stellar mass and supermassive black holes, but intermediate mass ones have long proved elusive. Until now.
The Bullet Cluster has, for nearly 20 years, been hailed as an empirical "proof" of dark matter. Can their detractors explain it away?
On a cosmic scale, our existence seems insignificant and inconsequential. But from another perspective, humans are completely remarkable.
The standard picture of our Universe is that it's dominated by dark matter and dark energy. But this alternative is also worth considering.
On the largest of cosmic scales, the Universe is expanding. But it isn't all-or-nothing everywhere, as "collapse" is also part of the story.
The structure of our Solar System has been known for centuries. When we finally started finding exoplanets, they surprised everyone.
There are many things that separate science from ideology, politics, philosophy, or religion. Follow these 10 commandments to get it right.
A long view of biological survival might point us to new possibilities for finding life elsewhere in the Universe.
The last infant stars are finishing their formation inside these pillars of gas. The evaporation of those columns is almost complete.
Sure, there's less daylight during winter than summer, as your hemisphere is tilted away from the Sun. But darkness goes deeper than that.
The near and far sides of the Moon are so different from each other, and no one is sure why. New lunar samples could confirm a wild theory.
All telescopes are fundamentally limited in what they can see. JWST reveals more distant galaxies than Hubble, but still can't see them all.
There was a time where no starlight was visible throughout the entire cosmos. That time was short-lived: shorter than astronomers imagined.
Gravitational waves carry enormous amounts of energy, but spread out quickly once they leave the source. Could they ever create black holes?
CERN's NA64 experiment used a high-energy muon beam technique to advance the elusive search for dark matter, offering new hope for solving one of astronomy's greatest mysteries.
Traveling back in time is a staple of science fiction movies. But according to Einstein, it's a physical possibility that's truly allowed.
The sharpest optical images, for now, come from the Hubble Space Telescope. A ground-based technique can make images over 100 times sharper.
From the coldest planets to spacecraft that have exited the Solar System, these little-known facts stump even many professional astronomers.
The Universe's history, from cosmic inflation to the Big Bang to the present, is known. But whether it's infinite or not is still a mystery.
Although the Big Bang occurred at an instant in time long ago, we still see the light from it. Will the evidence ever disappear completely?
Known as hypervelocity stars, we originally thought just one would be ejected every 100,000 years. The real number is much greater.