There are a few clues that the Universe isn't completely adding up. Even so, the standard model of cosmology holds up stronger than ever.
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Sometimes, going "deeper" doesn't reveal the answers you seek. By viewing more Universe with better precision, ESA's Euclid mission shines.
Since JWST first glimpsed the Universe, we've entered a new era in understanding the earliest objects in the Universe. What have we learned?
A spherical structure nearly one billion light-years wide has been spotted in the nearby Universe, dating all the way back to the Big Bang.
It took 9.2 billion years of cosmic evolution before our Sun and Solar System even began to form. Such a small event has led to so much.
Though a single measurement is not enough to definitively decide the debate, this is a major win for dark matter proponents.
Life became a possibility in the Universe as soon as the raw ingredients were present. But living, inhabited worlds required a bit more.
An incredible composite image of Pandora's Cluster, Abell 2744, simultaneously showcases both our impressive knowledge and vast ignorance.
Here's what recent DESI measurements suggest — and why it's too early to update conventional predictions about the Universe's distant future.
The center of the galaxy doesn't just host stars and a black hole, but an enormous set of rich gassy and dusty features. Find out more!
19 years ago, the Bullet Cluster provided an empirical proof for dark matter. Even today, modified gravity still can't explain it.
There are two methods to measure the expansion rate of the Universe. The results do not agree with each other, and this is a big problem.
JWST has seen more distant galaxies than any other observatory, ever. But many candidates for "most distant of all" are likely impostors.
From quarks and gluons to giant galaxy clusters, everything that exists in our Universe is determined by what is (and isn't) bound together.
The farther away they get, the smaller distant galaxies look. But only up to a point, and beyond that, they appear larger again. Here’s how.
With a finite 13.8 billion years having passed since the Big Bang, there's an edge to what we can see: the cosmic horizon. What's it like?
For some reason, when we talk about the age of stars, galaxies, and the Universe, we use "years" to measure time. Can we do better?
Some 55 million light-years away lies the giant galaxy Messier 87. Its supermassive black hole, inside and out, looks better than ever.
What do ghosts and anomalous galaxy rotation rates have in common? Some sci-fi enthusiasts believe the answer involves "parallel universes."
Along with gravitational lensing and ALMA's incredible long-wavelength spectroscopy, JWST is reshaping our view of the early Universe.
It is a story with nebulous beginnings and no discernible end.
A new measurement offers insights on the density of the mysterious force driving the Universe's expansion.
Since dark matter eludes detection, the mission will target sources of light that are sensitive to it.
In physics, we reduce things to their elementary, fundamental components, and build emergent things out of them. That's not the full story.
To Fred Hoyle, the Big Bang was nothing more than a creationist myth. 75 years later, it's cemented as the beginning of our Universe.
Our Universe requires dark matter in order to make sense of things, astrophysically. Could massive photons do the trick?
Stars orbiting black holes were observed to move significantly slower than expected. One explanation centers on dark matter.
2022 was a year full of scientific discoveries and the dawn of the JWST. But Hubble's still going after 32 years. Here's the amazing proof!
Generations ago, cosmologists asserted that the Universe might not just be the same in all directions, but at all times. But is that true?