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History & Society
Trace how culture, power, and ideas shape societies across time.
What happened 4.56 billion years ago is the most important part of the cosmic story ever to happen to us. If you were to look at our Universe at the time […]
For billions of years, dark energy couldn’t have been detected. Now, it’s everywhere we look. When we look out at the ultra-distant Universe, billion of light-years away, we’re seeing it as […]
We can see light from the atoms in the Universe before the first stars form. And no, I don’t mean from the CMB! After the Big Bang, it took only a […]
Happy birthday to Pluto, discovered on this day in 1930. Pluto, first discovered in 1930, was no more than a distant dot in our most powerful telescopes. Clyde Tombaugh’s original images […]
It’s a rare occasion for orbits to align so perfectly. Enjoy the sights this Tuesday. On Tuesday, February 19th, the Moon will reach perigee, its closest point of approach to planet […]
From billions of miles away, a faint, single pixel shows us how precious and alone Earth truly is. There are people alive today who can remember a time where no human-made […]
The heaviest elements in the periodic table have their own unique story. No, they don’t come from a supernova. When it comes to the elements of the Universe, every one […]
A new study claims that dark energy is changing with time. Here’s what it would mean, if true. For the past generation, we’ve recognized that our Universe is a particularly dark […]
Only 8 worlds make the astronomical cut as planets. Here are the 10 fascinating bodies that didn’t make it. Astronomically, bodies within the Solar System must achieve three criteria in order […]
Although the great Martian dust storm of 2018 may have ended its life, its accomplishments will live on forever. Note: This article was originally published on January 25, 2019 on Forbes. […]
All the other planets have craters, icecaps, clouds, or a rich, banded structure. But not Uranus. The eight major planets of the Solar System all possess their own unique features. The […]
We’d never flown past or imaged a small, isolated Kuiper belt object before. Here’s what we know so far. As 2018 ended and 2019 began, NASA’s New Horizons flew past its […]
Whether you caught or missed the eclipse of January 20/21, 2019, here’s what you need to know for all the ones you’ll ever view again. On January 20/21, 2019, a very […]
On January 20/21, half of Earth will experience a total lunar eclipse. For the first time in 19 years, this includes all of North and South America. When the Sun, Earth, […]
Sometimes, chemistry can be more important for color than even physics. All across the world, volcanic eruptions remind us of the destructive power residing beneath Earth’s surface. You might be used […]
The reason why is simple, and should apply to every solar system like our own. On January 3rd, 2019, Earth reached the point in its orbit where it’s at its closest […]
The Earth is getting warmer, and humans are the cause. This is why. Let’s play pretend for a moment. Pretend, if you can, that you’ve never heard about the idea of […]
While nothing is ever certain about the future, here are 10 great achievements you can bet on. Every year, unexpected scientific discoveries challenge what we know. Observations using the Atacama Large […]
Sometimes, the biggest answers to the deepest questions come in the most unexpected of places. In the Solar System, anything out past Neptune is generally considered to be the outer reaches […]
Dark matter is one of the most puzzling, unintuitive concepts in all of physics. But we still need it. Our Universe isn’t like us. While we’re made of atoms, and other […]