Cosmology

Cosmology

planetary nebulae infrared spitzer
What kind of object will you form? What will its fate be? How long will a star live? Almost everything is determined by mass alone.
Great Pyramid
A non-invasive method for looking inside structures is solving mysteries about the ancient pyramid.
borexino
If you're a massless particle, you must always move at light speed. If you have mass, you must go slower. So why aren't any neutrinos slow?
universe bulk volume brane dimension
Unless you confront your theory with what's actually out there in the Universe, you're playing in the sandbox, not engaging in science.
NASA spitzer infrared
JWST's revolutionary views arrive in high-resolution at infrared wavelengths. Without NASA's Spitzer first, it wouldn't have been possible.
Drake equation
The Fermi paradox (along with the subsequent Drake equation) is so difficult that even brilliant thinkers can make little dent in it.
dark energy
Dark energy is one of the biggest mysteries in all the Universe. Is there some way to avoid "having to live with it?"
Nothing in this Universe is eternal — not even the stars.
"The School of Athens" by Raffaello Sanzio da Urbino
Though ultimately incorrect, the ancient Greek philosophers blazed a conceptual trail for humankind to understand the nature of reality.
Roger Penrose conformal cyclic cosmology
Nobel Laureate Roger Penrose, famed for his work on black holes, claims we've seen evidence from a prior Universe. Only, we haven't.
UNCOVER NIRCam mosaic
An incredible composite image of Pandora's Cluster, Abell 2744, simultaneously showcases both our impressive knowledge and vast ignorance.
EHT event horizons
Since its observation discovery in the 1990s, dark energy has been one of science's biggest mysteries. Could black holes be the cause?
When you combine the Uncertainty Principle with Einstein's famous equation, you get a mind-blowing result: Particles can come from nothing.
entanglement across space
Are quantum fields real, or are they simply calculational tools? These 3 experiments show that if energy is real, so are quantum fields.
From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger.
hubble image
It is a story with nebulous beginnings and no discernible end.
NASA cassini saturn rings shadow eclipse
The secret ingredient is violence, and it just might indicate that "moonmoons" aren't as uncommon as most astronomers think.
halo evolve cosmic time millennium II
Generations ago, cosmologists asserted that the Universe might not just be the same in all directions, but at all times. But is that true?
Ghosts of andromeda molecular clouds
A fascinating 90 minute podcast between Dr. Ivanna Escala and Ethan Siegel on Starts With A Bang!
A red-orange background with atom-like scribbles
The answer to the age-old philosophical question of whether there is meaning in the Universe may ultimately rest upon the power of information.
John Templeton Foundation
timeline of the universe history
From the earliest stages of the hot Big Bang (and even before) to our dark energy-dominated present, how and when did the Universe grow up?
Bullet Cluster separation mass gravity x-ray lensing
19 years ago, the Bullet Cluster provided an empirical proof for dark matter. Even today, modified gravity still can't explain it.
The Universe isn't as "clumpy" as we think it should be.
galaxy RXJ2129-z8HeII
The Universe certainly formed stars, at one point, for the very first time. But we haven't found them yet. Here's what everyone should know.
JWST Pandora's Cluster Abell 2744
Along with gravitational lensing and ALMA's incredible long-wavelength spectroscopy, JWST is reshaping our view of the early Universe.
There might be a hard limit to our knowledge of the Universe.
travel straight line
In Einstein's relativity and the Standard Model, we only have three spatial dimensions. But there could be more, and many think there are.
methuselah star
One study suggested that the "Methuselah Star" is older than the Universe itself.
"Once quantum mechanics is applied to the entire cosmos, it uncovers a three-thousand-year-old idea."
Most globular clusters appear to form their stars all at once, but there are exceptions. JWST just observed how "second formations" happen.