SCIENCE
-
How long does it take to travel through the Universe at 1g?
1g is our acceleration in Earth’s gravity: 9.8m/s². If a spaceship constantly accelerated at that rate, here’s how far we…
Read More » -
Ask Ethan: Could we spot an extinction-level asteroid?
65 million years ago, a massive asteroid struck Earth, causing a mass extinction. Without advance warning, could anyone have spotted…
Read More » -
The most distant lensing cluster reveals a dark matter surprise
Over 10 billion years in the past, an ultra-massive galaxy cluster lenses objects behind it. That has big implications for…
Read More » -
Ask Ethan: What super-galactic structures are we a part of?
We live on Earth, orbiting the Sun, part of our Solar System, within the Milky Way. But what’s our membership…
Read More » -
One stringy thought causes inflationary cosmologists to lose sleep
When it comes to the big question of our cosmic origins, inflation is our leading theory. But did string theory…
Read More » -
Ask Ethan: How do space telescopes stay focused?
With targets from all across the Universe, focusing a space telescope — with so many moving parts — is challenging,…
Read More » -
How a single atom contains the entire quantum Universe
By probing the Universe on atomic scales and smaller, we can reveal the entirety of the Standard Model, and with…
Read More » -
A single illustration reveals the entirety of cosmic history
After a period of cosmic inflation came to an end, the hot Big Bang commenced. 13.8 billion years later, we…
Read More » -
Ask Ethan: How are black holes active if nothing escapes from them?
Once you cross over to the inside of an event horizon, you can never come out again. But then, how…
Read More » -
The scientific value, and limits, of the Anthropic Principle
The anthropic principle has fascinating scientific uses, where the simple fact of our existence holds deep physical lessons. Don’t abuse……
Read More »