Europa may be difficult to access. But if a recent study is correct, its subsurface ocean would be more accessible than previously thought.
Most potentially hazardous asteroids remain unidentified. NEO surveyor could change that, but only if it's funded, and soon.
Extremely precise atomic clocks are not just of theoretical interest; they could help detect impending volcanic eruptions or melting glaciers.
Look out at a distant object, and you're not seeing it as it is today. It's size, brightness, and actual distance are all different.
It was supposed to have a 5.5-10 year lifetime, and take 6 months to calibrate. It's performing better than anyone anticipated.
If there are human-sized creatures walking around on other planets, would we be able to view them directly?
There are pros and cons to sending interstellar messages to aliens that may or may not exist.
When the Hubble Space Telescope first launched in 1990, there was so much we didn't know. Here's how far we've come.
Ancient helium-3 from the dawn of time leaks from the Earth, offering clues to our planet’s formation. A key question is where it leaks from.
Spirals, ellipticals, and irregulars are all more common than ring galaxies. At last, we know how these ultra-rare objects are made.
The recently discovered Oort cloud comet, Bernardinelli–Bernstein, has the largest known nucleus: 119 km. Here's what it could do to Earth.
The European Space Agency’s Solar Orbiter recently captured images that could help scientists better under the mysterious physics of our Sun.
Dr. Tyson explains where we might find aliens, why "dark matter" is a misleading term, and why you can blame physics for your favorite team's loss.
Single objects rarely change the course of an entire scientific field. Distant object GNz7q, a galaxy-quasar hybrid, might do exactly that.
For some reason, the charges on the electron and proton are equal and opposite, and their numbers are equal, too. But why?
A new paper combines two concepts from the edges of astrophysics: Dyson Spheres and black holes. A Type III civilization could combine them.
Forget about the terawatt lasers we're making on Earth. This natural one is thousands of times more powerful than the Sun.
We've fooled ourselves before with galaxies that look just like this one. The evidence we have simply isn't strong enough.
In the latest edition of the Starts With A Bang podcast, we talk with soon-to-be Dr. Arianna Long about galaxies, from birth to today.