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Astronomy
There are ~400 billion stars in the Milky Way, and ~2 trillion galaxies in the visible Universe. But what if we aren't typical?
From physics and alchemy to theology and eschatology, Isaac Newton’s research was rooted in a personal pursuit of the Divine.
There are an estimated two trillion galaxies within the observable Universe. Most are already unreachable, and the situation only gets worse.
Hubble's deepest views of space revealed fewer than 10% of the Universe's galaxies. James Webb will change that forever.
Shooting star or piece of space dust?
In terms of the planets we've discovered, super-Earths are by far the most common. What does that mean for the Universe?
With a new telescope on the horizon, we reflect on the best pictures of space that came before.
If you want to understand what the Universe is, how it began, evolved, and will eventually end, astrophysics is the only way to go.
In 1990, we only knew of the ones in our Solar System. Today, we know of thousands, and that's just the tip of the iceberg.
The search for worlds outside our solar system has just turned up a planet, TOI-2257 b, with a truly extreme orbit.
The James Webb Space Telescope finally could answer the age-old question of whether we are alone in the universe.
The first supernova ever discovered through its X-rays has an enormously powerful engine at its core. It's unlike anything ever seen.
The Solar System isn't a vortex, but rather the sum of all our great cosmic motions. Here's how we move through space.
Some stars burn through their fuel as expected, and die of natural causes. But others, instead, get murdered. Here's their story.
Centuries ago, the plague forced people into quarantine for years. Isaac Newton and Galileo used the time to revolutionize the world.
For many, it was just a successful launch like any other. But for scientists around the globe, it was a victory few dared to imagine.
Even with leap years and long-term planning, our calendar won't be good forever. Here's why, and how to fix it.
Whether or not life exists elsewhere in the Universe, we can be assured of one thing: We are the only human beings in the cosmos.
With launch, deployment, calibration, and science operations about to commence, here are 10 facts that are absolutely true.
The photometric filters for the Vera Rubin Observatory are complete and showcase why they are indispensable for astronomy.
The boiling new world, which zips around its star at ultraclose range, is among the lightest exoplanets found to date.
Whether NASA likes it or not, humans eventually will be having space sex.
Life arose on Earth very early on. After a few billion years, here we are: intelligent and technologically advanced. Where's everyone else?
How can you "touch the Sun" if you've always been inside the solar corona, yet will never reach the Sun's photosphere?
Astrophysicists once believed in a static Universe, containing only the Milky Way galaxy. Science definitively proved otherwise.
A newly discovered “ultrahot Jupiter” has the shortest orbit of any known gas giant.
After more than two decades of precision measurements, we've now reached the "gold standard" for how the pieces don't fit.
After decades of development, whether NASA's Webb succeeds or fails all comes down to five critical milestones that are only days away.
Every December, the Geminid meteor shower reaches its peak. Its 2021 show will be spectacular, but only if you do it right.
Our Solar System's outer reaches, and what's in them, was predicted long before the first Oort Cloud object was ever discovered.