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Astrophysics
From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger.
It is a story with nebulous beginnings and no discernible end.
The secret ingredient is violence, and it just might indicate that "moonmoons" aren't as uncommon as most astronomers think.
Generations ago, cosmologists asserted that the Universe might not just be the same in all directions, but at all times. But is that true?
A fascinating 90 minute podcast between Dr. Ivanna Escala and Ethan Siegel on Starts With A Bang!
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
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?
The solution involves the infamous Navier-Stokes equations, which are so difficult, there is a $1-million prize for solving them.
NASA has finally chosen which flagship mission, like Hubble and JWST, will launch in ~2040. Detecting alien life is now a reachable goal.
19 years ago, the Bullet Cluster provided an empirical proof for dark matter. Even today, modified gravity still can't explain it.
In general relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?
Air currents in our atmosphere limit the resolving power of giant telescopes, but computers and artificial stars can sharpen the blur.
We are traveling in a realm that once exclusively belonged to the gods. Space travel will force humanity to rethink everything.
Many people out there, including scientists, claim to have discovered a series of game-changing revolutions. Here's why we don't buy it.
The Universe isn't as "clumpy" as we think it should be.
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.
A history of injustice and the greatest natural location for ground-based telescopes have long been at odds. Here's how the healing begins.
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.
Size matters, but it's not the only thing.
In Einstein's relativity and the Standard Model, we only have three spatial dimensions. But there could be more, and many think there are.
One study suggested that the "Methuselah Star" is older than the Universe itself.
In just a few seconds, a gamma-ray burst blasts out the same amount of energy that the Sun will radiate throughout its entire life.
Humanity's newest, most powerful space telescope is performing even better than predicted. The reason why is unprecedented.
A conversation with an advanced alien species is likely to be simple and to take 1,000 years. It might also be dangerous.
Individual space telescopes, like Hubble and JWST, revolutionized our knowledge of the Universe. What if we had an array of them, instead?
The information we have in the Universe is finite and limited, but our curiosity and wonder is forever insatiable. And always will be.
Most globular clusters appear to form their stars all at once, but there are exceptions. JWST just observed how "second formations" happen.
Here on Earth, the Sun is our primary source of light, heat, and energy. But it also poses a grave threat to human civilization.
On Earth, microbial growth is common in lava tubes no matter the location and climate, whether it’s ice-volcano interactions in Iceland or hot, sand-floored lava tubes in Saudi Arabia.